Apollo Twin USB Software Manual - Universal Audio

Apollo Twin USB Software Manual UAD Software Version 9.11.0 www.u

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Apollo Software Manual - USB

HIGH-RESOLUTION INTERFACE with Realtime UAD Processing
Apollo Twin USB Software Manual
UAD Software Version 9.11.0
Manual Version 191016
www.uaudio.com

Table Of Contents

Tip: Click any section or page number to jump directly to that page.

About This Manual................................................................................. 6
For Apollo Twin USB........................................................................................... 6
Introduction.......................................................................................... 7
Welcome To Apollo!............................................................................................. 7 Apollo Software Features..................................................................................... 8 Apollo Documentation Overview......................................................................... 10 Apollo Software Overview................................................................................... 12
Installation & Setup............................................................................. 14
System Requirements....................................................................................... 14 Setup Overview................................................................................................. 15 Software Installation......................................................................................... 16 Windows Setup................................................................................................. 17
Working With Apollo............................................................................. 20
Apollo Setups Overview..................................................................................... 20 Using Apollo as an Audio Interface..................................................................... 23 Using Apollo with Console (without a DAW)......................................................... 27 Using Apollo Without A Computer....................................................................... 28 Using Apollo with a DAW (without Console)......................................................... 29 Using Apollo Concurrently with a DAW and Console.............................................. 32 Virtual I/O........................................................................................................ 34
Console Overview................................................................................. 36
What is Console?.............................................................................................. 36 Console Functions............................................................................................ 37 Global Settings................................................................................................. 37 When To Use Console........................................................................................ 38 Interactions Between Console and Apollo ........................................................... 38 Accessing Console............................................................................................ 39 Console Layout................................................................................................. 40 Global Window Elements................................................................................... 42 Meter Bridge Overview....................................................................................... 43

Apollo Twin USB Software Manual

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Info Bar Overview............................................................................................. 44 Current Bank Overview...................................................................................... 45 View Column Overview....................................................................................... 46 Monitor Column Overview.................................................................................. 48 Console Plug-In Inserts Overview........................................................................ 51 Console Settings Overview................................................................................. 52 Insert Effects Overview...................................................................................... 53 Popover Windows.............................................................................................. 54 Cues Overview.................................................................................................. 55 ALT Monitoring Overview................................................................................... 59 Console Sessions Overview................................................................................. 60 Keyboard Focus & Control.................................................................................. 61 Adjusting Console Controls................................................................................ 62 Controls Shortcuts............................................................................................ 62 Keyboard Shortcuts........................................................................................... 63 Multiple Undo/Redo.......................................................................................... 64
Console Reference............................................................................... 65
Meter Bridge.................................................................................................... 65 View Column.................................................................................................... 68 View Options.................................................................................................... 71 Info Bar........................................................................................................... 77 Channel Input Controls...................................................................................... 82 Console Plug-In Inserts..................................................................................... 85 Sends Popover.................................................................................................. 86 Monitor Mix Controls......................................................................................... 88 Aux Returns..................................................................................................... 94 Monitor Column................................................................................................ 97 Cue Outputs Popover....................................................................................... 101 Control Room Column..................................................................................... 103 Console Sessions............................................................................................ 105 Sessions Manager Popover............................................................................... 107 Window Title Bar............................................................................................. 112 Application Menus.......................................................................................... 113

Apollo Twin USB Software Manual

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Console Plug-In Inserts...................................................................... 117
Inserts Display................................................................................................ 117 Unison Insert................................................................................................. 118 Insert Assign Popover...................................................................................... 119 Insert State Indicators..................................................................................... 120 Insert Hover Options....................................................................................... 120 Insert Options Menu....................................................................................... 121 Channel Insert Effects..................................................................................... 122 Plug-In Editor Window..................................................................................... 123 Channel Strips................................................................................................ 126 Presets Manager............................................................................................. 128 Presets Manager Popover................................................................................. 130 Save Preset Popover........................................................................................ 132
Console Settings................................................................................ 133
Console Settings Overview............................................................................... 133 Hardware Settings Panel................................................................................. 135 Display Panel................................................................................................. 144 Plug-Ins Panel................................................................................................ 146 MIDI Panel.................................................................................................... 148
Console Recall Plug-In....................................................................... 150
Console Recall Overview.................................................................................. 150 Console Recall Controls................................................................................... 151 How To Use Console Recall.............................................................................. 152
Unison............................................................................................. 154
What is Unison?............................................................................................. 154 Unison Features............................................................................................. 155 Unison Plug-Ins.............................................................................................. 155 Activating Unison........................................................................................... 156 Unique Behavior of Unison Inserts................................................................... 157 Controlling Unison Plug-Ins with Apollo............................................................ 158 Gain Stage Mode............................................................................................ 161 Unison Load/Save Behaviors............................................................................ 164 Unison Operation Notes................................................................................... 165

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Latency & Apollo............................................................................... 167
Delay Compensation with Apollo....................................................................... 167 Input Delay Compensation in Console............................................................... 167 Latency Basics............................................................................................... 170
Device Drivers................................................................................... 173
Apollo Drivers Overview................................................................................... 173 Driver I/O Tables............................................................................................. 174
Glossary............................................................................................ 180
Notices............................................................................................. 187
Technical Support.............................................................................. 188
Universal Audio Knowledge Base...................................................................... 188 YouTube Support Channel................................................................................ 188 Universal Audio Community Forums................................................................. 188 Contact Universal Audio Support...................................................................... 188

Apollo Twin USB Software Manual

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About This Manual
For Apollo Twin USB
This manual applies only to an Apollo Twin USB audio interface that is connected to a host PC computer system via USB 3.
For other Apollo models
FireWire connections For first-generation (silver) Apollo and Apollo 16 models connected to the computer via FireWire, refer to the Apollo FireWire Software Manual. Thunderbolt connections For all Apollo models connected to the computer via Thunderbolt, refer to the Apollo Thunderbolt Software Manual.
About Apollo Documentation
See the Apollo Documentation Overview for related information.

Apollo Twin USB Software Manual

About This Manual

Introduction

Welcome To Apollo!
High-Resolution Music Production with Classic Analog Sound
Designed to play a central role in modern studios, Apollo audio interfaces incorporate a true "no compromise" approach to audio quality. Building upon decades of UA's analog hardware heritage, they offer extremely high-resolution sonics, with the lowest THD and highest dynamic range in their class. Apollo's top-end converters -- and UA's meticulous attention to circuit design -- translate into greater accuracy and depth in your recordings, from tracking and overdubbing, to mixing and mastering.
Note: Throughout this manual,"Apollo" refers to the Apollo Twin USB audio interface model for the Windows operating system (unless specifically noted otherwise.
Realtime UAD Plug-In Processing for Monitoring and Tracking
While Apollo Twin USB's "natural" sound is exceedingly open and transparent, it can quickly deliver a wide range of classic analog tones and color via its Realtime UAD Processing. With DUO Core processing onboard, this onboard DSP Acceleration allows for recording and mixing through UAD Powered Plug-Ins -- with as low as sub-2ms latency -- so producers can quickly monitor, audition, and optionally "print" audio using classic analog emulations from API, Ampex, Lexicon, Manley, Neve, SSL, Studer, and more.*
Important Fundamental Concept: The primary function of the included Console program is to control Apollo's hardware input monitoring, Unison plug-ins, and Realtime UAD Processing. Console MUST be used to take advantage of these features. Console replaces the software input monitoring feature of the DAW mixer.
*All trademarks are recognized as property of their respective owners. Individual UAD Powered Plug-Ins sold separately.

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Introduction

Apollo Software Features
Note: For a list of hardware features, see the Apollo Hardware Manuals.
Console Program
General: · Enables Realtime UAD Processing on Apollo inputs with indiscernible latency · Analog-style mixer for low-latency monitoring and tracking with UAD plug-ins · Remote control of Apollo hardware features and functionality · Console sessions can be saved/loaded for instant recall of any configuration · Multiple Undo/Redo for edit operations
Realtime UAD Processing: · UAD plug-ins can be serially chained on each input and aux return · UAD insert processing can be monitored "wet" while recording wet or dry · Sub-2ms round-trip latency with four serial UAD plug-ins at 96 kHz sample rate
Channel Inputs: · Input channels for all interface hardware inputs · Level, pan, solo, and mute controls on all inputs · 4 plug-in inserts per input (5 inserts on preamp channels) for Realtime UAD Processing · Two stereo auxiliary sends with level and pan controls on all inputs · Virtual inputs accept any outputs from DAW · Adjacent input pairs can be linked for convenient stereo control · Sample rate conversion available on S/PDIF inputs
Monitoring: · Stereo monitor mix bus with level, mute, solo, ALT, dim, and source select controls · Three independent stereo cue mix buses (Monitor, Headphones, Line 3-4) · Flexible routing matrix for assigning cues to any available headphone and line outputs · Independent monophonic sum controls for all mix buses
Auxiliary Buses: · Two stereo auxiliary sends/returns with independent level, mute, and mono sum controls · Four plug-in inserts per auxiliary return for Realtime UAD Processing · Auxiliary bus returns can be routed to main monitor mix and/or cue outputs · Independent pre/post switching on each auxiliary bus

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Introduction

Metering: · Signal level meters with peak hold and clip indicators on all inputs · Dual peak hold meters with signal peak LEDs display monitor bus levels · Input meters are globally switchable to display pre or post fader signal levels · Independently selectable peak/clip hold times and global clear clips button
Console Recall plug-in
· Convenient access to Console's monitor controls via DAW plug-in · Saves complete Apollo configurations inside DAW projects for easy recall of settings · VST, RTAS, and AAX 64 plug-in formats
UAD Powered Plug-Ins
· Award-winning audio plug-ins for monitoring, tracking, mixing, and mastering · UAD plug-ins can be used simultaneously within Console and/or DAW · All UAD plug-ins include fully-functional 14-day demo period · Complete UAD plug-ins library is available online at www.uaudio.com
UAD Meter & Control Panel program
· Configures global UAD-2 and UAD Powered Plug-Ins settings · Facilitates automatic authorization of UAD plug-in licenses and UAD-2 devices · UAD-2 resource meters for DSP and Memory usage
Device Drivers
· 64-bit device drivers · 32-bit and 64-bit UAD plug-ins · All hardware inputs and outputs can be individually addressed by DAW · All of Console's mix buses can be routed to DAW inputs for recording (Virtual I/O)

Apollo Twin USB Software Manual

Introduction

Apollo Documentation Overview
Documentation for all Apollo components is extensive, so instructions are separated by areas of functionality. Each functional area has a separate manual file. An overview of each file, and how they are accessed, is provided in this section.
Note: All manual files are in PDF format. PDF files require a free PDF reader program such as Adobe Acrobat Reader.
Apollo Manual Files
Apollo Hardware Manuals Each Apollo model has a unique hardware manual. The Apollo hardware manuals contain complete hardware-related details about one specific Apollo model. Included are detailed descriptions of all hardware features, controls, connectors, and specifications.
Note: Each hardware manual contains the unique Apollo model in the file name.
Apollo Software Manual The Apollo Software Manuals are the companion guide to the Apollo hardware manuals. They contain detailed information about how to configure and control all Apollo software features using the Console program, Console Settings window, and Console Recall plugin. Refer to the Apollo Software Manuals to learn how to operate the software tools and integrate Apollo's functionality into the DAW environment.
Note: There is a unique Apollo Software Manual for each Apollo connection type (USB, Thunderbolt, FireWire).
UAD System Manual
The UAD System Manual is the complete operation manual for Apollo's UAD-2 functionality and applies to the entire UAD-2 product family. It contains detailed information about installing and configuring UAD devices, the UAD Meter & Control Panel program, buying optional plug-ins at the UA online store, and more. It includes everything about UAD except Apollo-specific information and individual UAD plug-in descriptions.
UAD Plug-Ins Manual
The features and functionality of all individual UAD Powered Plug-Ins is detailed in the UAD Plug-Ins Manual. Refer to this document to learn about the operation, controls, and user interface of each UAD plug-in that is developed by Universal Audio.

Apollo Twin USB Software Manual

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Direct Developer Plug-In Manuals
UAD Powered Plug-Ins includes plug-ins created by our Direct Developer partners. Documentation for these 3rd-party plug-ins are separate files written and provided by the plug-in developers. The file names for these plug-in manuals are the same as the plug-in titles.
Accessing Installed Documentation
All documentation is copied to the startup disk during software installation. Either of these methods can be used to access installed documentation:
· Choose "Documentation" from the Help menu within the Console program · Click the "Product Manuals" button in the Help panel within the UAD Meter &
Control Panel program
Universal Audio Knowledge Base
The UA Knowledge Base is your complete technical resource for configuring, operating, and troubleshooting UA products. You can watch helpful support videos, search the Knowledge Base for answers, find updated technical information that may not be available in other publications, and more.
· help.uaudio.com
UAD Community Forums
The unofficial UAD discussion forums are a valuable resource for all Universal Audio product users. This website is independently owned and operated.
· www.uadforum.com
Host DAW Documentation
Each host DAW program has its own particular methods for configuring audio interfaces and using plug-ins. Refer to the host DAW's documentation for specific instructions about using audio interface and plug-in features within the DAW.
Hyperlinks
Links to other manual sections and web pages are highlighted in blue text. Click a hyperlink to jump directly to the linked item.
Tip: Use the "back" button in the PDF reader program to return to the previous page after clicking a hyperlink.
Glossary
This manual uses technical terms and acronyms that may be unfamiliar. Refer to the Glossary for the definitions of many of these terms.

Apollo Twin USB Software Manual

Introduction

Apollo Software Overview
Apollo has several software components that comprise the complete Apollo system. A brief description of each component is provided below, along with a link to complete details about the component.
Console
The Console program is Apollo's primary software interface. Its main function is to control the hardware unit and its digital mixing and monitoring capabilities. The Console mixer is where Realtime UAD Processing using UAD Powered Plug-Ins is configured.
Important Fundamental Concept: The primary function of the included Console program is to control Apollo's hardware input monitoring, Unison plug-ins, and Realtime UAD Processing. Console MUST be used to take advantage of these features. Console replaces the software input monitoring feature of the DAW mixer.
For an overview of the program, see Console Overview. For complete details, see Console Reference.
Console Recall Plug-In
Console Recall is a DAW plug-in supplied in VST, RTAS, and AAX 64 formats. Console Recall offers additional convenience when using Apollo and/or the Console program in conjunction with a DAW. Its primary function is to store complete Console configurations within the DAW project file.
For complete details, see Console Recall Plug-In.
UAD Powered Plug-Ins
UAD Powered Plug-Ins are the software plug-in titles containing the audio DSP algorithms. UAD plug-ins are loaded within a host program for audio processing on Apollo's integrated UAD-2 DSP accelerator (Console and DAWs are host programs). Each UAD plug-in contains a graphical user interface (GUI) and various control parameters that can be manipulated to achieve the desired sonic results.

Typical UAD plug-in interface

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Introduction

Apollo includes numerous UAD Powered Plug-Ins that are bundled with the device. Optional UAD plug-ins can be evaluated without functional limitations for 14 days in demo mode. Optional plug-in licenses can be purchased at the UA online store.
For additional details about how UAD Powered Plug-Ins are used with Console and DAWs, see About UAD Powered Plug-Ins Processing. For general UAD Powered Plug-Ins use instructions, see the UAD System Manual. For complete details of individual UAD Powered Plug-Ins, see the UAD Plug-Ins Manual.
UAD Meter & Control Panel
The UAD Meter & Control Panel program is used to configure global functionality that pertains to all UAD-2 devices in the same system (the same program is used for all UAD-2 products). All UAD-2 global system settings are set within this program. The program also facilitates automatic authorization of UAD plug-in licenses and UAD-2 devices.
The program consists of two components: The UAD Meter and the UAD Control Panels.
UAD Meter
The UAD Meter window (at right) displays the current DSP and memory status of all active UAD-2 hardware (including multiple devices). These meters are also present at the bottom of the Console program window.
Note: Apollo uses DSP and memory for its internal DSP mixer. Therefore, the UAD meter displays DSP and memory usage even when UAD plug-ins are not in use.
UAD Control Panels
The UAD Control Panel window has multiple panels that display, and enable control of, the various UAD-2 system, plug-in, and global configuration parameters.
The screenshot at right shows the System Info panel, one of four control panel windows in the UAD Meter & Control Panel program.
Accessing UAD Meter & Control Panel
The program can be accessed from the Windows Start Menu.
Details About the Program
Complete documentation for the UAD Meter & Control Panel program is in the UAD System Manual.
Apollo Device Drivers
The Apollo device drivers are the low-level system software files that instruct the computer's operating system on how to communicate with the Apollo hardware. The drivers are loaded during system startup so whenever Apollo is connected, the interface is ready to accept instructions from the OS and audio programs.

Apollo Twin USB Software Manual

Introduction

Installation & Setup
System Requirements
Note: For complete compatibility information, visit help.uaudio.com · Microsoft Windows 7, 8.1, or 10 (64-Bit Editions) · PC with available built-in* USB 3 SuperSpeed port · Intel Core i3, Core i5, Core i7, or Xeon processor* · 6 gigabytes available storage · Internet connection to download software and authorize UAD plug-ins · Compatible VST, RTAS, or AAX 64 plug-in host DAW software · USB 3.0 SuperSpeed cable (included)
*Notes
· Quad Core i7 or better recommended · 2-in-1 systems (notebook/tablet) not recommended · USB 3 adapters (such as PCIe-to-USB 3 expansion cards) are not tested for
Apollo Twin USB connection

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Installation & Setup

Setup Overview
Hardware Setup
For hardware installation notes and wiring diagrams, refer to the Apollo Hardware Manuals.
Software Updates
The most recent UAD Powered Plug-Ins software version is always recommended so you'll have access to the latest UAD plug-ins and stability updates. The most recent software is available at the Universal Audio website.
Firmware Updates
For optimum performance, always update the firmware if prompted by the software. Follow the instructions onscreen to complete the process before using the software.
Windows OS Setup
Specific Windows operating system settings are necessary for optimum performance when using Apollo Twin USB. For details, see Windows Setup in this chapter. Additional tuning tips to maximize system optimization are available on the UA website. Visit the Apollo Twin USB Knowledge Base at help.uaudio.com for details.
Important: Visit the Apollo Twin USB Knowledge Base at help.uaudio.com for updated technical news, known issues, and system optimization information.
Combining UAD Devices
Apollo Twin USB can be combined with other UAD devices for increased DSP capacity. However, there are specific constraints when UAD devices of different types (PCIe, Satellite, Apollo), or even the same type, are combined within a single system. These constraints are based on the specific connection protocol being used (FireWire, Thunderbolt, or USB 3). For specific UAD device compatibility with Apollo Twin USB, refer to the UAD System Manual.
Technical Assistance
If you need help, see the Technical Support page.

Apollo Twin USB Software Manual

Installation & Setup

Software Installation
Preparation
Close all open files and programs before starting the software installation procedure. The installer requires a restart after installation. If updating to a newer version of Apollo software or installing additional UAD devices, it is not necessary to remove the previous UAD software or hardware from the system.
Connect And Power Hardware First
Note: For optimum results, connect and power the Apollo Twin USB hardware before installing the UAD software.
To install, register, and authorize Apollo and UAD plug-ins software: 1. Connect Apollo Twin USB to a built-in USB 3 port on the computer with the included USB 3 cable, then power on Apollo Twin USB. 2. Download the latest UAD software installer: www.uaudio.com/download 3. Open the downloaded installer program. The installer will guide you. Be sure to restart the computer when prompted.
Important: If prompted to update the firmware, see the procedure below.
4. After restarting, the default web browser launches and connects to the UA online store. Follow the instructions in the web browser to create an account, register the hardware, and claim bundled UAD plug-ins.
5. After registration is complete, authorize Apollo Twin USB by following the instructions on the registration web pages.
6. Proceed to Windows Setup to complete the setup process. If the device was already registered, when the computer restarts the UAD Meter & Control Panel automatically opens and UAD plug-ins are automatically authorized in the background.
Note: To authorize a UAD system that is not connected to the Internet, see "Offline Authorization Procedure" in the UAD System Manual.
Firmware Update Procedure
If prompted by the "Firmware Update" dialog window to update the Apollo firmware: 1. Click "Load" to begin the process. The "firmware is updating" window appears. 2. Wait for the "Power Off UAD Device" dialog window, which appears after the firmware is updated. 3. Power OFF Apollo, then power ON Apollo. The firmware update is complete.

Apollo Twin USB Software Manual

Installation & Setup

Windows Setup
The Windows operating system settings below are important to ensure optimum performance with Apollo Twin USB.
Prevent Windows from powering off USB 3 devices
Default Windows settings can interrupt USB data streams. Follow the procedure below to prevent Windows from powering off USB devices.
1. Open the Windows Device Manager. The Device Manager can be accessed by right-clicking the Windows Start Menu and selecting the item from the contextual menu.
2. Double-click the Universal Serial Bus controllers branch in the Device Manager window. The individual USB controllers in the branch are displayed in a list.

Double-Click The USB controllers branch in Device Manager
3. Double-click the USB Root Hub device in the USB controllers branch list. The Properties window for the individual device opens. (continued on next page) Branch

Double-Click

USB Root Hub controller device in branch list

Apollo Twin USB Software Manual

Installation & Setup

4. Click the Power Management tab within the device's Properties window. The power management options are displayed.
5. Uncheck the "Allow the computer to turn off this device to save power" option. 6. Click the OK button to activate the new setting.
Click Tab
NO check in box
Click OK
Correct setting shown -- "Allow" option is disabled in device properties window 7. Repeat steps 3 6 for all individual devices that include "USB Root Hub" in its
name.

Repeat for every USB Root Hub

Repeat procedure for all USB Root Hubs
8. Disable Windows system notification sounds by following the procedure on the next page.

Apollo Twin USB Software Manual

Installation & Setup

Disable Windows Notification Sounds
Windows notification sounds (such as a "ding" when an alert window appears) can interfere with DAW audio. Follow the procedure below to disable all notification sounds.
1. Open the Sound control panel. Control Panel>Sound can be accessed by right-clicking the Windows Start Menu and selecting "Control Panel" from the contextual menu, then double-clicking Sound within the Control Panel window.
2. Click the Sounds tab within the Sound control panel window. The Windows notification sounds options are displayed.
3. Click the "Sound Scheme" drop menu to display the menu items.
4. Select "No Sounds" from the Sound Scheme drop menu.
5. Click the Apply button to activate the new setting.
Important: Ensure the "Play Windows Startup sound" box is unchecked.

Click Tab Choose "No Sounds"

Uncheck

Click Apply

Correct setting shown -- "No Sounds" scheme is selected in Sound control panel

Additional Windows Optimizations
· Visit the Apollo Twin USB Knowledge Base at help.uaudio.com for updated technical news and system optimization information.
· See Windows WDM System Audio Operation Notes for related information when using Apollo Twin USB for system sound I/O.

Apollo Twin USB Software Manual

Installation & Setup

Working With Apollo

Apollo Setups Overview
Apollo is a powerful and flexible audio interface that can be used in many ways. This chapter explains how to apply Apollo in various digital audio environments. Although the exact techniques for configuring and using Apollo will vary according to needs, its application will generally fall within one of the main categories below. Each application is detailed in this chapter.
Audio interface without DSP
Apollo operates the same way as other non-DSP audio interfaces when it is used without the Console program or UAD Powered Plug-Ins. See Using Apollo as an Audio Interface for details.
Digital mixer with Console
Apollo and Console can be used without a DAW or any other audio software, providing access to all Apollo features, its DSP mixing functionality, and Realtime UAD Processing. See Using Apollo with Console (without a DAW) for details.
Standalone use without computer
Apollo can be used as a digital mixer (with limited functionality) without Console or any connection to a host computer. See Using Apollo Without A Computer for details.
With a DAW (without Console)
When Apollo is used with a DAW but without the Console program (or Console Recall plug-in), the DAW controls all signal I/O routing, software monitoring, and UAD-2 DSP-accelerated UAD plug-ins processing. See Using Apollo with a DAW (without Console) for details.
With Console and a DAW
Console is used concurrently with a DAW when low-latency monitoring and/or recording of Apollo's inputs with (or without) Realtime UAD Processing is desired. This workflow completely eliminates the I/O buffering latencies associated with software monitoring. Console's Virtual I/O feature can also be used with the DAW to route virtual software instruments, or any other DAW outputs, into Console for Realtime UAD Processing. See Using Apollo Concurrently with a DAW and Console for details.
UAD Powered Plug-Ins: Console versus DAW
There are some fundamental differences when using UAD Powered Plug-Ins within Console or within a DAW. See About UAD Powered Plug-Ins Processing for details.

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About UAD Powered Plug-Ins Processing
Two Distinct Methods with Apollo
Apollo features two distinct methods for using UAD plug-ins: The "Console processing method" for low-latency monitoring and tracking with Realtime UAD Processing via the Console program, and the "DAW processing method" for DSP-accelerated UAD-2 processing via VST, RTAS, and AAX 64 plug-ins in DAW programs.
These two methods are not a switched mode, but instead simply depend on which program (Console or DAW) contains the UAD plug-ins. Both methods can be used simultaneously for extremely powerful and flexible signal monitoring, routing, and processing.
Console Processing Method
UAD plug-ins run in realtime only when used within Console. Using Realtime UAD Processing in Console is optimum for artists and engineers that need to monitor and capture performances without DAW I/O buffering latency and its associated hindrances.
The special Realtime UAD Processing functionality is achieved via Apollo's unique ultralow latency DSP+FPGA+Console design. Although every audio interface has undetectable latency that is inherent to the A/DD/A process, routing Apollo's input signals through UAD plug-ins within Console does not add to this inherent latency.
Up to four UAD plug-in instances (five with Apollo mic preamps and Unison) can be inserted serially ("stacked" or "chained") on each of Console's analog/digital/virtual inputs and/or auxiliary buses simultaneously, without adding to the inherent I/O latency.
Note: Upsampled UAD plug-ins add latency when used within Console or a DAW.
Console inputs with Realtime UAD Processing can be routed into the DAW via Apollo's device drivers, and optionally recorded as either processed (wet) or unprocessed (dry) audio using the Insert Effects feature in Console (see the Insert Effects Overview).
Important: UAD plug-ins used within Console for Realtime UAD Processing must run on the DSP within Apollo. If other UAD-2 devices are active in the same system, DSP on those devices cannot be used for Realtime UAD Processing.
Note: UAD plug-ins within Console use DSP differently than when used within a DAW. To maintain the lowest possible input latency, UAD plug-ins on a Console input must fit on a single DSP core, or two cores if Channel DSP Pairing is enabled. Therefore, the "DSP resources were exceeded" message may appear even when the UAD gauges indicate DSP is available.

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Working With Apollo

DAW Processing Method
When UAD plug-ins are used within compatible VST, RTAS, or AAX 64 host DAW programs, I/O buffering is used for plug-in processing because the data must be shuttled back and forth between the DAW and Apollo. In this scenario, the UAD-2 DSP inside Apollo behaves exactly like other UAD-2 devices such as UAD-2 Satellite and UAD-2 PCIe cards for UAD plug-in processing.
Hardware I/O buffering with a DAW adds latency that is compensated by the host DAW's automatic ouput delay compensation during mixing (i.e., all tracks remain time-aligned). However, at larger buffer sizes this latency makes software monitoring via the DAW mixer while tracking with UAD plug-ins less practical. Using Apollo Concurrently with a DAW and Console eliminates this latency during tracking because software monitoring is not used -- the DSP mixer inside Apollo is used for hardware monitoring instead.
Note: See Latency & Apollo for detailed information about latency.
Latency is not an issue during mixdown in a DAW; realtime processing is not necessary because the performances are already captured. The benefits of using Apollo's integrated DSP acceleration during mixing include the off-loading of plug-in processing from the host computer's CPU and the sonic rewards of UAD plug-ins, which run exclusively on UAD-2 and Apollo platforms.
Concurrent use of UAD Plug-Ins in Console and a DAW
UAD plug-ins can be used within Console and a DAW simultaneously. In this scenario, Apollo's DSP resources are shared between the two programs. Realtime UAD Processing is available via Console, and I/O buffered (non-realtime) UAD processing is available via VST, RTAS, or AAX 64 plug-ins in the DAW.

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Working With Apollo

Using Apollo as an Audio Interface
Apollo functions like other (non-DSP) audio interfaces when it is used without the Console program, the Console Recall plug-in, or UAD plug-ins. Apollo's ASIO drivers enable it to be used for computer audio I/O routing with any ASIO-compliant audio software such as a DAW.
Basic audio software that uses system sound routing, such as web browsers, music players, system software alert sounds, and similar programs use Windows WDM drivers instead of ASIO drivers. Apollo Twin USB has drivers for both ASIO and WDM.
Accessing Apollo I/O
Audio is routed to and from Apollo via its device drivers. DAW software accesses Apollo Twin USB I/O directly via the ASIO drivers, and is set as the audio interface in the audio settings/preference panel in the DAW software. Basic audio software uses the WDM audio device set as the preference in the operating system. Both setups are detailed in this chapter.
ASIO and WDM settings
ASIO and WDM are different subsystems that are configured separately. ASIO system settings are configured in the Apollo Console Settings>Hardware panel and within the DAW preferences. WDM system settings are configured in the Sound control panel within Windows.
Note: When using Apollo Twin USB for WDM system sound I/O, the sample rate of both subsystems must be set the same rate to be heard in both subsystems. See Windows WDM System Audio Operation Notes for related information.
Apollo I/O Driver Names
Each Apollo input and output has a channel number and name provided by the Apollo drivers to ASIO. If an audio software program can access ASIO devices directly, it may be possible to designate specific inputs and/or outputs within the program.
All Apollo Driver I/O numbers and names are listed in the Driver I/O Tables. These values can be used to reference specific Apollo inputs or outputs by number or name if allowed by the program.
Setting the ASIO I/O in the DAW program
To access Apollo's I/O in an audio software program that can select ASIO devices directly, look for a setting in the audio software program's preferences called "device setup" or "audio device" or similar. Each program is different; consult the software program documentation for specifics. Several examples are shown on the following page.

Apollo Twin USB Software Manual

Working With Apollo

Steinberg Cubase In Cubase, the audio I/O device is set in the Device Setup > VST Audio System panel.
Apollo selected as the I/O device in Cubase Ableton Live In Live, the audio I/O device is set in the Preferences > Audio panel.
Apollo selected as the I/O device in Ableton Live Avid Pro Tools In Pro Tools, the audio I/O device is set in the Playback Engine panel.

Apollo selected as the I/O device in Pro Tools

Apollo Twin USB Software Manual

Working With Apollo

Setting the I/O in the Operating System
If a software program doesn't have its own setting for accessing an ASIO device directly, it uses the device specified in the Control Panel>Sound panel (within the Windows operating system) for WDM audio. The Sound control panel configures the WDM device for all system sounds and any other program that uses the system device for audio I/O.
Note: To prevent system sounds from being inadvertently routed into Apollo's monitor outputs and/or DAW recordings, setting Apollo as the output for system sounds is generally not recommended when using a DAW.
To use Apollo Twin USB I/O for system sounds: 1. Open Windows Control Panel>Sounds.
2. In the Playback tab, select Apollo. Click Apply, then click Set Default.
3. In the Recording tab, select Apollo. Click Apply, then click Set Default.
This setup will assign system audio to Apollo's default channels (1 & 2), which are routed to Apollo's left & right monitor outputs.
Important: See Windows WDM System Audio Operation Notes for important information when using Apollo Twin USB for system sound I/O.

Specifying Apollo for WDM system audio output (left) and input (right) in the Sound control panel

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Working With Apollo

Windows WDM System Audio Operation Notes
Windows WDM system audio is used for audio input and playback in media players, web browsers, audio conference, and similar programs.
To ensure proper audio system functionality, follow these guidelines when using Apollo Twin USB as the input and/or output device for Windows WDM system audio.
· Disable system notification sounds. Turn off all Windows system alert sounds using the procedure detailed under Windows Setup in the installation chapter.
· ASIO and WDM sample rates must match. All sample rate values in ASIO DAW programs and WDM audio programs must be set to the same sample rate. If the ASIO and WDM sample rates are not the same, audio from one or more programs will not be heard correctly.
· WDM sample rate changes. Set the sample rate in the Apollo Console Settings>Hardware panel before changing sample rates in the Sound>Playback or Sound>Recording control panels within Windows. Note that WDM programs may need to be closed then reopened to be heard correctly if the sample rate is changed in the Sound control panel within Windows.
· DAW sample rate changes. If the DAW sample rate is changed, WDM audio will no longer be heard correctly because the sample rates no longer match. In this case, the WDM sample rate must be changed in the Windows Sound>Playback panel to match the DAW sample rate.
Additional Windows Optimizations
· Visit the Apollo Twin USB Knowledge Base at help.uaudio.com for updated technical news, known issues, and system optimization information.

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Working With Apollo

Using Apollo with Console (without a DAW)
Apollo and Console can be used without a DAW or any other audio software. Using Console without a DAW provides access to all Apollo functionality and simplifies the use of Apollo's digital mixing, monitoring, and Realtime UAD Processing features when a DAW's recording and playback features are not needed.
Apollo has an internal DSP mixer for realtime mixing and monitoring of Apollo inputs, with optional Realtime UAD Processing using UAD plug-ins. The software interface for this functionality is the Console program, but the actual mixing and signal processing occurs inside Apollo.
Using Console by itself
To use Console by itself for input monitoring and Realtime UAD Processing, there aren't any special considerations; just launch Console and start using it. See Console Overview for related information.
Using Console with other audio programs
System Audio When the OS is set to use Apollo for computer system audio (see Setting the I/O in the Operating System), the computer system audio is routed to Console's monitor outputs and mixed with Apollo inputs (if any).
Important: See Windows WDM System Audio Operation Notes for related information when using Apollo Twin USB for system audio I/O.
Apollo's input levels can be adjusted with Console's input channel faders, while the computer system's audio level at the monitor outputs is determined by the volume settings of the audio software using the system outputs.
Note: The computer system volume level is not adjusted with Console's input faders.
With a DAW Digital Audio Workstations have their own audio mixer. Understanding the interactions between Console and the DAW will help to ensure an optimized workflow in this scenario. See Using Apollo Concurrently with a DAW and Console for details.

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Working With Apollo

Using Apollo Without A Computer
Standalone Use
Although the Console program and/or a DAW are required to unleash the full potential of Apollo, it can be used as a standalone digital mixer with limited functionality without any connection to a host computer.
Console settings that are retained on power cycle All currently active I/O assignments, signal routings, and monitor settings are saved to internal firmware before Apollo is powered down, and recalled when power is re-applied. Therefore these last-used settings are available even when a host computer is not used.
UAD plug-ins are not retained on power cycle UAD plug-in instantiations are not retained after powering down then powering up again, because the plug-in files must be loaded from the host computer.
Standalone use with UAD plug-ins
If UAD plug-ins are active when Apollo's connection to the host computer is lost (either by disconnecting the cable or shutting down the computer), Console's current UAD plugin configurations remain active for Realtime UAD Processing until Apollo is powered down.
Disconnecting Upon disconnection from the host computer, the following changes occur:
· Auxiliary buses are unmuted · Solo is deactivated on all channels
Operation After disconnecting, the following behavior applies:
· The LINK switch on Apollo's front panel cannot be used to link or unlink stereo channels. This point only applies if the host connection was lost; the switch does operate when Apollo is powered on before connecting to a host computer.
· If channels 1 & 2 are stereo linked and an instrument is plugged into one of the Hi-Z inputs, the stereo link is unlinked, and UAD plug-in processing is bypassed on both channels. The stereo link, and UAD processing, returns when the Hi-Z input is removed.

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Working With Apollo

Using Apollo with a DAW (without Console)
When used with a DAW but without the Console program (or Console Recall plug-in), the DAW controls all signal I/O routing, software monitoring, and DSP-accelerated UAD plugin processing.
Monitoring with the DAW
The primary function of Console is monitoring of Apollo's inputs during live performance, with (or without) Realtime UAD Processing. When software monitoring is enabled in the DAW, Console's input monitoring must be disabled.
If Console's input monitoring isn't disabled, phasing and/or doubling of the monitored signal(s) will occur, because the input signal is being heard twice first from the lowlatency DSP mix (Console) and shortly thereafter from the higher latency software mix (DAW).
Important: When the DAW's software monitoring feature is enabled (when not using Console for input monitoring), Console's inputs must be muted to avoid signal doubling at Apollo's monitor outputs.
How to disable input monitoring in Console To disable input monitoring in Console when using software monitoring in the DAW, open Console and mute all input channels within Console. Console may then be quit.
Tip: In Console, ALT+click any input MUTE switch to quickly toggle the mute state of all inputs.
Using a DAW without Console is a typical workflow during mixdown, where low-latency monitoring is not required and buffering latency is not an issue because the tracks are already recorded. When recording new tracks, the DAW+Console workflow (following section) is recommended.
In this scenario, Apollo functions as two "separate" devices: an audio interface, and a UAD-2 DSP accelerator:
1. Audio Interface T he DAW accesses and routes Apollo's audio interface I/O via the ASIO device drivers. Audio I/O latency is determined by the I/O Buffer Size setting.
2. UAD-2 DSP Accelerator T he DAW controls Apollo's internal UAD-2 DSP via UAD plug-ins in VST, RTAS, or AAX 64 format that are loaded within the DAW. I/O buffering is used for UAD plug-ins because data from the DAW must be shuttled (via USB 3 or FireWire) to/from Apollo's DSP.
Note: Apollo, like other UAD devices, can only load UAD plug-ins which are specifically designed to run on UAD DSP accelerators. Host-based "native" plugins cannot run on the UAD DSP.

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Working With Apollo

Accessing Apollo's I/O in a DAW
Specifying the audio interface device To access Apollo's I/O within a DAW, the DAW's audio engine must be configured to use Apollo as the audio interface device. Specific instructions vary by DAW; consult the DAW documentation for specifics. See Setting the ASIO I/O in the DAW program for examples.
I/O Complement The specific default inputs and outputs available, and their names, vary by Apollo model. For complete lists of I/O channels that are available, see the Driver I/O Tables.
Selecting Apollo's Inputs and Outputs When the DAW is configured to use Apollo as the audio interface device, the DAW's audio input and output channels can be routed to/from Apollo's I/O via the device drivers.

Apollo Twin's inputs (left) and outputs (right) as they appear when configuring stereo I/O in Pro Tools

Apollo Twin USB Software Manual

Working With Apollo

Default Outputs
The main stereo outputs of a DAW usually output to channels 1 & 2 by default. Therefore, since channels 1 & 2 correspond to Apollo's monitor outputs, the DAW's main outputs are sent to Apollo's monitor outputs by default. The channels used for output can usually be changed in the DAW.
Apollo I/O Driver Names
Each Apollo input and output has a channel number and name provided by the Apollo drivers. The DAW uses these numbers or names to designate the specific inputs and/or outputs within the DAW.
Numbers vs. Names Apollo's drivers describe all I/O channels by name and number, but what is actually displayed depends on each particular DAW. For example, Avid Pro Tools displays the driver names, but Steinberg Cubase and Ableton Live display the driver numbers. Some DAWs (e.g., Cubase) allow you to type in your own driver names.
All Apollo driver I/O numbers and names are listed in the Driver I/O Tables. These values can be used to reference specific Apollo inputs or outputs by name when selecting I/O in a program that does not display the driver names.

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Working With Apollo

Using Apollo Concurrently with a DAW and Console
Console is used concurrently with a DAW when low-latency monitoring and/or recording of Apollo's inputs or mix buses with (or without) Realtime UAD Processing is desired. This workflow completely eliminates the I/O buffering latencies associated with software monitoring.
In this scenario, Console is used to control all input monitoring and Realtime UAD Processing when recording, and the DAW's software monitoring feature should be disabled.
Software Monitoring versus Hardware Monitoring
Software monitoring (listening to live inputs via the DAW mixer) has discernible latency due to audio interface I/O buffering. Hardware monitoring via an audio interface's internal DSP mixer (e.g., Apollo's Console program) does not have discernible latency, because the live audio is internally routed directly from the inputs to the outputs without DAW I/O buffering (see Latency Basics for detailed explanations).
Monitoring with Console
The primary function of Console is monitoring of Apollo's inputs during live performance, with (or without) Realtime UAD Processing. When used with a DAW, Console is used as a monitor mixer that functions separately from the DAW's software monitoring mixer.
Disable Software Monitoring in the DAW when using Console When Console is used for live input monitoring with a DAW, the DAW's software monitoring feature should be disabled. If it isn't, phasing and/or doubling of the monitored signal(s) will occur, because the input signal is being heard twice first from the low-latency DSP mix (Console) and shortly thereafter from the higher latency software mix (DAW).
Important: To eliminate doubled signals, disable software monitoring in the DAW when Console is used to monitor Apollo's inputs. Refer to the DAW documentation for specific instructions on how to defeat software monitoring in the DAW.

Apollo Twin USB Software Manual

Working With Apollo

Routing and Recording Console Inputs and Mix Buses
Recording Apollo inputs in a DAW This functionality is covered in Accessing Apollo's I/O in a DAW.
Recording Console mix buses in a DAW Console's monitor, cues, and aux bus outputs can be routed into the DAW for recording Console's active mix buses. See Virtual I/O for details.
Recording Realtime UAD Processing in a DAW When monitoring Apollo's inputs with Realtime UAD Processing, those inputs can be recorded with processing (wet) or without processing (dry). These functions are accomplished with the Insert Effects switches. See the Insert Effects Overview for details.
Console with the Console Recall Plug-In
The Console Recall plug-in offers additional convenience when using Apollo and/or the Console program in conjunction with a DAW. Its primary function is to store complete Console settings within the DAW project file.
When a DAW project is loaded containing the Console Recall plug-in and the Synchronize function within the plug-in is enabled, the Console settings stored within the newlyloaded DAW session are sent to Console. See SYNC for details.
Latency Compensation
Some latency is inevitable in complex digital audio environments such as when running a DAW with Console. Fortunately, when these programs are properly configured and operated, latency is not a deterrent because it is negligible during low-latency monitoring via Console, and automatically managed for time-alignment of recorded tracks via the DAW's automatic delay compensation feature.
See Delay Compensation with Apollo for more information.
Recording multiple inputs simultaneously
Console's Input Delay Compensation feature should be enabled to maintain phase alignment when monitoring and/or recording simultaneous multi-channel sources (such as a drum kit or multi-mic'd guitar amp) when Realtime UAD Processing is active in Console and some (or all) of the UAD plug-ins in Console are upsampled. See Input Delay Compensation in Console for complete details.
Latency Basics
For a complete overview of latency in a digital audio system, see Latency Basics.

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Working With Apollo

Virtual I/O
Overview
Apollo's device drivers carry various virtual (software only) input and output channels in addition to those directly associated with the hardware inputs and outputs. The virtual channels consist of Console's virtual inputs, Console's virtual outputs, and Console's cue, aux, and monitor bus outputs.
Flexible, Pristine Signal Routing Virtual I/O facilitates highly flexible signal routing via the DAW, without needing to reach behind the gear rack for manual cable patching. Additionally, because the virtual I/O channel audio streams are in the digital domain, a pristine audio signal path is maintained without requiring additional A/D D/A conversions.
Virtual Inputs into Console The virtual input channels enable any DAW output to be routed directly into Console's virtual inputs so Realtime UAD Processing with UAD plugins can be applied to the DAW signal(s) within Console. This feature is particularly useful when performing live with virtual software instruments inserted in the DAW, because the throughput latency associated with I/O buffering is reduced in this configuration.
DAW outputs can be digitally routed into Console inputs for
Realtime UAD Processing
Virtual Outputs into DAW Virtual outputs enable any (or all) of Console's virtual input channels, and the monitor and aux mix bus outputs, to be directly routed to any DAW input so they can be recorded. With virtual outputs, it's easy to capture Console signals (for example, a Console aux return) with or without Realtime UAD Processing.

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Console outputs can be digitally routed into DAW inputs for recording
and/or further routing

Working With Apollo

How To Route Any DAW Output Into Console's Virtual Inputs
To route a DAW output signal into Console for Realtime UAD Processing, simply assign any Console virtual channel (or channel pair, when the DAW source is stereo) as the output device for any DAW track, bus, or output. That DAW output signal then appears in the associated virtual input channel in Console, and it can be processed or routed the same as Apollo's hardware inputs.
At Right: Routing a DAW channel's outputs into Console's virtual inputs
How To Route Any Console Virtual Output Into the DAW
To route a Console output signal into the DAW so it can be recorded, simply assign any Console virtual channel (or channel pair, when the Console source is stereo) as the input source for any DAW input. That Console signal can then be recorded or routed like any hardware input by the DAW.
Tip: This technique can be used to re-capture and record (bounce) a software instrument performance that was virtually routed from the DAW into Console for Realtime UAD Processing.
At right: Routing Console's virtual outputs into the DAW channel's input. Note that any virtual output listed here (including Console's monitor outputs and aux bus returns) could
be used as the DAW input.

Apollo Twin USB Software Manual

Working With Apollo

Console Overview

Console's

What is Console?

program icon

The included Console program is the software interface for Apollo audio interface

hardware. Console's analog-style workflow is designed to provide quick access to the

most commonly needed features in a familiar, easy-to-use program.

Console's function is to control the Apollo hardware unit and its digital mixing and lowlatency monitoring capabilities. Console is where Realtime UAD Processing and Unison with UAD plug-ins is configured and operated.

Important Fundamental Concept: The primary function of Console is to control Apollo's hardware input monitoring, Unison plug-ins, and Realtime UAD Processing. Console MUST be used to take advantage of these features. Console replaces the software input monitoring feature of the DAW mixer.

Console can be used simultaneously with a DAW for front-end signal processing and lowlatency monitoring and/or tracking. Complete Console sessions can be saved as presets for easy recall of the entire configuration, or single channel strips can be saved/recalled using Channel Strip Presets. Console can also be used to configure Apollo's audio interface I/O settings such as sample rate, clock source, and reference levels.
The Console program is a remote interface to the digital mixing and signal processing functions that are performed within the Apollo hardware. Although Console runs on the host computer, the computer's CPU is not performing these audio functions. All signal processing occurs on the SHARC DSPs inside the hardware unit(s).

Note: Apollo interfaces use UAD DSP and memory resources for its internal DSP mixer. Therefore, the UAD Meters will show DSP and memory usage when Apollo is connected, even if Console and/or UAD plug-ins are not currently loaded.

The Console program's main window

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Console Overview

Console Functions
Console enables the following functionality when used with Apollo:
· Hardware control. All of Apollo's front panel hardware controls (except headphone volume) can be controlled using Console, facilitating easy hardware manipulation even if Apollo is installed in a location out of reach of the computer operator.
· Low-latency monitoring. Using Console eliminates the latency associated with DAW I/O buffering that makes monitoring problematic for the performer. By removing the DAW's "software input monitoring" feature from the monitoring signal flow altogether, the need to adjust I/O buffer sizes and latency is no longer relevant.
· Realtime UAD Processing. UAD Powered Plug-Ins can be inserted into all Console inputs and/or auxiliary returns (within available UAD DSP resources), for the ultimate latency-free sonic experience while monitoring and/or tracking live performances. All processed (or unprocessed) mix buses, including the monitor, auxiliary, and cue buses, can be optionally routed into the DAW for recording.
· Unison. Apollo's UnisonTM technology gives you the tone of the world's most sought-after tube and solid state mic preamps -- including their all-important impedance, gain stage "sweet spots," and component-level circuit behaviors.
· Send/Return Auxiliary buses. Console has two pre/post stereo aux buses, with independent send levels per input, for grouped signal processing (conserving UAD DSP resources) or routing to the DAW.
· Flexible cue monitor mixing. Two independent stereo cue mix buses are available with per-input sends to ensure individual performers are able to hear "more me" if desired. Cue mixes can be easily routed to any available headphone or line outputs.
· Session management. Complete Console configurations can be saved and loaded to/from disk as presets, for convenient and unlimited session management. Sessions can also be stored/recalled within the DAW project using the Console Recall plug-in.
Global Settings
Parameters within the Console Settings Window are available for configuring various global behaviors:
· Hardware. Global interface settings such as sample rate, clock source, reference levels, and digital output mirroring.
· Software. Global software settings for Console such as metering and plug-in window behaviors.

Apollo Twin USB Software Manual

Console Overview

When To Use Console
The Console program can be used without a DAW, simultaneously in conjunction with a DAW, or not at all. These scenarios are covered in greater detail in Working With Apollo.
Console without DAW.Console can be used by itself without the use of a DAW or any other audio software. Using Console without a DAW provides access to all Apollo functionality and simplifies the use of Apollo's digital mixing, monitoring, and Realtime UAD Processing features when a DAW's recording and playback features are not needed.
Console with DAW.Console is used at the same time as a DAW when low-latency monitoring and/or recording of Apollo's inputs with (or without) Realtime UAD Processing is desired. In this scenario, Console is used as a "front end" to control input monitoring when recording, and the DAW's software input monitoring feature is disabled. This workflow completely eliminates the I/O buffering latencies associated with using software monitoring via the DAW.
Important: To eliminate doubled signals, software monitoring in the DAW must be disabled when Console is used for input monitoring. Conversely, Console inputs must be muted if the DAW's software monitoring feature is enabled.
UAD plug-ins can be used within Console and a DAW simultaneously. In this scenario, Apollo's DSP resources are shared between the two programs. Realtime UAD Processing is available via Console, and buffered (non-realtime) UAD processing is available via VST, RTAS, or AAX 64 plug-ins within the DAW. See UAD Powered Plug-Ins: Console versus DAW for more details about this scenario.
Tip: Console can be opened or quit at any time, whether or not a DAW is already running. Console's settings and UAD plug-ins remain active after the program is quit.
Interactions Between Console and Apollo
Console's settings mirror the Apollo hardware. Changes made to one are also made on the other, and vice versa. If changes are made to Console when Apollo is not connected, then Apollo is subsequently connected, the Console settings are sent to the hardware.
Important: If Console is launched after changes are made to Apollo using the front panel hardware controls, the current Console settings will overwrite the changes made using the hardware controls.

Apollo Twin USB Software Manual

Console Overview

Accessing Console
Either of these methods can be used to open the Console program: · Right-click the blue UA diamond logo in the Windows System Tray (at lower right of screen), then select "Console" from the contextual menu · Access the program from: Start Menu>All Programs>UAD Powered Plug-Ins>Console
Accessing Console from the Windows Start Menu
Quitting Console
To quit the Console program, close all Console windows (main Console window and Console Settings window) by clicking the "X" Close button in the Window Title Bar.

Apollo Twin USB Software Manual

Console Overview

Console Layout
Console's visual and control elements are grouped according to functionality, with a layout similar to that found on typical analog mixers. Detailed explanations of all the Console control functions are similarly grouped and presented later in the Console Reference chapter.
Window Title Bar

Info Bar

View Column

Channel Input Strips

Auxiliary Return Strips

Monitor Controls

Console's main window and controls layout

Apollo Model Differences
The various models in the Apollo product lineup have different hardware features, and the Console software automatically reflects these differences. The Console interface elements that appear depends on which Apollo hardware model is connected to the computer.
Note: Elements in screen shots within this manual may vary from those that appear with the Apollo Twin USB model.

Apollo Twin USB Software Manual

Console Overview

Dynamic Window Size
The size of Console's high-resolution window can be dynamically adjusted in realtime to fit any workspace. To adjust the window size, click+drag a corner or edge on the right side of the window.

Width

Reducing the Console window width reduces the number of visible input channels. Use the Bank Bar in the Meter Bridge to view input channels that may be currently out of view.
Height

Drag a corner or edge on the right side to dynamically re-size
the Console window

When Console's window size is vertically adjusted, displayed elements are dynamically modified to fit available space. As the height is increased, some elements are enlarged for easier viewing and manipulation. As height is decreased, some elements are reduced.

Tip: All display and control elements are available regardless of window size.

Partial screenshots showing how control and display elements are changed with window size adjustments. Above: The elements shown at left are more compact
when vertical size is reduced.

Apollo Twin USB Software Manual

Console Overview

Global Window Elements
Some visual and control elements are always displayed in the Console window, while others depend on the current selection(s) in the View Column and Monitor Column, as illustrated below.
An brief overview of each global element is provided in this chapter. Detailed descriptions of all functions are provided in a later chapter.
The following elements are always visible in the Console window:

View Column Monitor Column Info Bar

Meter Bridge Current Bank Bank Bar (if channels out of view)

View Column

Bank Bar Current Bank (gray) (visible channels)

Meter Bridge (all unhidden channels)

Monitor Column

VIEW settings
Elements in this area depend on current VIEW
settings

Auxiliary & Control Room columns appear here when SHOW button(s) are
enabled

Info Bar
Console elements that are always visible

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Console Overview

Meter Bridge Overview
The Meter Bridge (illustrated below) is always visible at the top of the Console window. It displays all non-hidden input channels, signal activity at these inputs, and the Bank Bar, which is used to scroll inputs that are out of horizontal view.
For detailed descriptions of all Meter Bridge elements, see Meter Bridge in the Console Reference chapter.

Mono Meter (single)

Stereo Meter (dual)

Signal Present (green)

No Signal (black)

Channel Input Meters

Bank Bar (gray)

Device Name (optional via right-click)
Non-Hidden Input Channels The Meter Bridge elements

Channels not in Current Bank (black)

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Console Overview

Info Bar Overview
The Info Bar (illustrated below) is always visible at the bottom of the Console window. It displays and provides access to several important functions.
Note: For detailed descriptions, see Info Bar in the Console Reference chapter.

Console Tempo Display & Menu

Clock Source Display & Menu

Sample Rate Display & Menu

UAD Resource Meters (Display only)

The Info Bar elements

Console Tempo
Console's current tempo is displayed here in beats per minute (BPM). The value is used by UAD plug-ins within Console that are set to use Tempo Sync. Click this area to enter or tap a different tempo.
Sample Rate
Apollo's current sample rate is displayed here. Click this area to select a different sample rate from the drop menu when using Console without a DAW.
Note: When using a DAW, the sample rate is set within the DAW.

Clock Source
The active clock source (Internal, ADAT, or S/PDIF) is displayed here. Click this area to select a different clock source from the drop menu. This area flashes red if the currently selected clock is unresolved (when digital audio is not synchronized).
UAD Resource Meters
This area displays DSP and memory resource loads used by all loaded UAD plug-ins (Console and DAW). UAD loads can be monitored as needed, for example when deciding which UAD plug-ins to load, based upon how much DSP is available.
Values displayed here are mirrored in the UAD Meter & Control Panel program. More detailed (per-SHARC) display of DSP usage is available in the System panel within the UAD Meter & Control Panel program.
Note: Apollo uses DSP and memory for its internal DSP mixer. Therefore, the UAD meter displays DSP and memory usage even when UAD plug-ins are not in use.

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Console Overview

Current Bank Overview
An important navigational concept in Console is the Current Bank. The Current Bank is all input channels that are currently displayed in the main body of the Console window (below the Meter Bridge) as shown in the illustration below.
The gray Bank Bar is used to change the Current Bank. For complete details, see Current Bank in the Console Reference chapter.

Meter Bridge

Bank Bar (gray)
Slide gray Bank Bar to change Current Bank

Channels not within Bank Bar

Current Bank (visible channels)

Channels not within Bank Bar

Conceptual illustration of the Current Bank. In this example, the Current Bank is analog channels 3 through 6. Moving the Bank Bar brings different channels into the Current Bank view.

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Console Overview

View Column Overview
The View Column (illustrated at right) is always visible at the left side of the Console window. The View Column contains the Application Menu, View selectors, View Options, Clear switches, and Settings switch, as shown at right. For detailed descriptions, see View Column.
Views
Four Views are available in Console: Overview, Inputs, Inserts, and Sends. Each View displays related elements and associated functionality in the main area of the Console window.
View Selectors
To change the current View: Click the View Selectors in the View Column, select the View from the Application Menu, or use the Keyboard Shortcuts.
View Options
The View Options activate various control functions within each View. The displayed View Options are contextual; some options change when a different View is selected.
Application Menus
Clicking the Menu switch presents the Application Menus, where various Console functions are accessed.
The Application Menus
Clear The Clear Switches are used to reset all signal clipping indicators and turn off/on the solo function on all channels.
Settings The Settings switch opens the Console Settings Window, where various global functions are defined. Related functions are grouped within one of five available tabs in the window.

Application Menus (global)
View Selectors
View Options
Clear Switches (global) Settings Switch (global)
The View Column as it appears in Sends View

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Console Overview

View Elements
Each View displays related elements and associated functionality in channel input strips within the main area of the Console window.
Note: The main monitor mix controls are the same in all views unless specifically hidden in Sends view. The channel input elements of each view are shown below. Complete details for all elements are described in the Console Reference chapter.
Each View displays different elements in the input channel strips

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Console Overview

Monitor Column Overview

The Monitor Column (illustrated at right) is always visible at the right side of the Console window. The Monitor Column contains elements related to monitor outputs, cue outputs, insert effect printing, and session file management, as shown at right.
For detailed descriptions, see Monitor Column in the Console Reference chapter.
Monitor Meters
These meters display the signal levels of the monitor mix bus just before the monitor level control. Levels displayed here mirror the state of the Monitor 1 2 LED meters on Apollo's front panel.
Global Insert Effects
These switches globally switch all Console inputs to either pass all UAD insert effect processing to the DAW (print wet) or not (monitor wet but print dry).
Insert Effects can also be individually switched on a per-channel basis (see Channel Insert Effects). The Global Insert Effects switches override the individual channel settings.

Monitor Meters
Global Insert Effects
Show/Hide Strips Open
Cue Outputs Window

Show Strips
These switches show and hide the visibility of the auxiliary return strips and/or the control room options strip. Each strip is visible when its SHOW switch is lit.

Monitor Output Options

Cue Outputs Window
Clicking this switch opens the Cue Outputs Popover, where the cue mix buses can be assigned and mirrored to available outputs.

Monitor Level

Monitor Output Options
The monitor outputs can be muted and/or set to monophonic with these switches. When ALT monitoring is enabled, additional switches appear to control which output the monitor mix is routed to.

Open Sessions Manager
The Monitor Column

Monitor Level
This is the master level control for Apollo's monitor outputs. It performs the same function as the MONITOR knob on Apollo's front panel. When the ring around the knob is RED, the monitor outputs are muted.

Sessions Menu
Clicking this switch opens the Session Manager popover window, where Console configuration files are managed.

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Console Overview

Channel Strips Overview
Each Console channel input strip (illustrated at right) controls a corresponding Apollo hardware input. The output of all Console channel inputs are always routed to Console's monitor outputs (except when muted). Inputs can be optionally routed to other outputs via the Cue Outputs Popover.
Console's channel input strips are essentially the same for all inputs, however there are some differences among the analog and digital inputs as noted below.
Note: For detailed descriptions, see Channel Input Controls.
Signal Flow
Audio signals in a Console channel flow through the inserts serially from top to bottom. Therefore, if more than one plugin is inserted in a channel, the location of a plug-in within the inserts can impact the sound of the channel. Plug-ins can be reordered by dragging them to change the serial processing order.
Input Types
Console has analog, digital, and virtual inputs. The controls that are available in each strip depends on the type of input.
Analog Inputs
Preamp Inputs Each of Apollo's preamp channels have multiple analog inputs (mic, line, Hi-Z) that can be selected with the preamp controls.
The preamp channels are switched between mic and line inputs manually via Console or Apollo's front panel. Channels are automatically switched to Hi-Z inputs when a ¼" mono (tip-sleeve) cable is connected to Apollo's front panel Hi-Z input jack.

Preamp Controls
Channel Inserts
Aux & Cue Sends
Monitor Mix Controls

Input Label
Channel Input Strip

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Console Overview

Digital Inputs
Optical Apollo Twin's digital TOSLink optical input can accept ADAT or S/PDIF. Console's inputs switch to reflect the digital input type currently in use (the digital input preference is set in the Console Settings window). The digital inputs work just like the analog inputs, except they don't have the extra the preamp and reference level settings that are only available on the analog inputs.
Virtual The virtual input channels in Console do not reflect Apollo's hardware inputs. Instead, they receive digital signals from DAW outputs via Apollo's device drivers, enabling Realtime UAD Processing on any DAW output. This feature is especially useful when playing virtual software instruments live through UAD plug-ins because it reduces I/O buffering latency. For complete details about this feature, see Virtual I/O.

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Console Overview

Console Plug-In Inserts Overview
The UAD plug-in inserts within each input and auxiliary strip is where UAD Powered Plug-Ins are selected and used for Realtime UAD Processing. Four inserts are available on every Console channel strip, plus the Unison insert on preamp inputs. Therefore up to five UAD plug-ins can be serially chained (stacked) per input within the constraints of available DSP resources.
Note: For complete details, see the Console Plug-In Inserts chapter.
Inserts Display

Channel Strip Presets (click for popover)

Inserts Rec/Mon Indicator
(click to switch)
Active Plug-In (click to edit)

Standard (non-Unison) Insert Slots
1 4

Disabled Plug-In (gray background)
Offline Plug-In (red background)
Empty Insert (click to assign)

Record/Monitor Indicator (INSERTS view only)

Channel Insert Effects Switch (INSERTS view only)
The Channel Inserts

Unison Insert
Apollo's Unison technology is activated when a Unison-enabled UAD plug-in is loaded in the dedicated Unison insert slot located above the preamp options (as shown at right, outlined in red).
Note: Audio on preamp channels is processed by the Unison insert (if active) before the channel inserts.
The Unison insert is only available on Apollo preamp channels. Unison inserts are operated exactly the same way as standard channel inserts. See the Unison chapter for related information.

The Unison Insert

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Console Overview

Console Settings Overview
Global parameters for Apollo and Console are configured in the Console Settings window.
Note: For complete details, see the Console Settings chapter.

Console Settings Panels

Controls within the Console Settings window are arranged according to related functionality. Each set of related controls are contained within a single panel.

Four panels are available in the Console Settings window:
Hardware Settings related to Apollo hardware device setup

Hardware panel within Console Settings

Display Settings related to how and what items are displayed in Console

Plug-Ins Settings related to UAD plug-ins used within Console

MIDI Settings for configuring MIDI control of Tap Tempo within Console

Accessing Console Settings
The Console Settings window can be opened with any of these methods:
· Choose View>Settings from the Application Menus · Right-click the blue UA diamond logo in the Windows System Tray (at lower right
of screen), then select "Console Settings" from the contextual menu · Click the SETTINGS switch at the bottom of the View Column · Use the "CTRL ," (CTRL + comma) keyboard shortcut
Settings switch in View Column

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Console Overview

Insert Effects Overview
The Insert Effects settings are used to specify whether or not Realtime UAD Processing in Console is recorded (printed) in the DAW.
· Console inputs are recorded with processing (wet) when Insert Effects are active. The UAD-processed signals are heard and recorded.
· Console inputs are recorded without processing (dry) when Insert Effects are inactive. The UAD-processed signals are heard, but not recorded.
Important: UAD plug-in processing in Console's Unison insert and auxiliary inserts are always routed to the DAW, regardless of the current Insert Effects setting (Unison and aux insert processing is always recorded).

Function of the Insert Effects Switch
The Insert Effects switch determines if the DAW records Console's inputs with or without Realtime UAD Processing, regardless of the actual wet or dry state of the monitor mix. This is accomplished by routing Console's inputs into the DAW from before the plug-in inserts (dry recording) or after the plug-in inserts (wet recording).
Record With Effects
When Insert Effects are record-enabled, Apollo's hardware input signals are processed by Console's UAD plug-in inserts before routing into the DAW. In this mode, the post-insert (wet) state of all Console inputs with Realtime UAD Processing is routed to the DAW inputs.
Note: This setting is used to record "wet" with Realtime UAD Processing.

Monitor With Effects
When Insert Effects is not record-enabled, Apollo's hardware input signals are routed directly into the DAW before being processed by Console's UAD plug-in inserts.
In this mode, the pre-insert (dry) state of all Console inputs is routed to the DAW inputs, even if Realtime UAD Processing is occurring in the monitor mix.
Note: This setting is used to record "dry" when Realtime UAD Processing is active.

Individual Channel Insert Effects
Insert Effects can be recorded wet or dry on a per-channel basis. For details, see Channel Insert Effects.
Global Insert Effects
Insert Effects for all channels can be globally switched to override the individual channel insert effect switches. For details, see Global Insert Effects.

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Console Overview

Popover Windows
Some Console functions that are not visible in the main window are accessed in popover windows. Popovers are a special type of window that automatically close when any area outside of the popover is clicked.
Note: The size of popover windows cannot be adjusted.
To close any popover, click anywhere outside of the popover, press the "X" switch at upper right of the window, or type the "esc" (escape) key on the computer's keyboard.
The following functions are accessed via popover windows:

Cue output assign Rename/link channel inputs Sends (Aux & Cue) Insert assign

Plug-in presets Channel presets Console session presets Console Tempo

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Console Overview

Cues Overview
The cue mix buses are used to create unique mixes that are separate from the main monitor mix. Cues are typically used for performers that want to hear a headphone mix that is different from the main monitor mix, sending separate mixes to other rooms or audio equipment, and similar applications.
In addition to the main monitor stereo mix bus and the two auxiliary stereo mix buses, Apollo Twin features two stereo cue mix buses that can be used for a variety of signal routing purposes.
Cue Labels
The two cues are labeled HP (headphone) and LINE 3/4 (line outputs 3 and 4) to reflect the available hardware outputs on the device.
Cue Components
The complete cue system is comprised of the cue mix buses, the cue sends, and the cue outputs.
Cue Mix Buses A cue mix bus is the summed stereo mix of individual audio signals. Signals are routed into the cue mix buses via the cue send controls, and returned from the cue mix bus via the cue outputs controls.
Cue Sends The cue sends adjust the individual channel signals going into the cue mix bus. Each input channel and aux return contains individual level, pan,* and mute controls for each active cue mix bus. All cue sends are pre-fader and pre-mute so they are not affected by adjustments to the main monitor mix.
*Note: If two input channels are stereo-linked, the cue sends on the stereo pair cannot be panned. Sends for stereo channels are hard-panned left and right.
Cue Outputs Cue mix buses are returned via the Cue Outputs window, which is a matrix for routing the cues to Apollo's available hardware outputs.
Cue Monitoring Available cue outputs also can be selected as a source for the main monitor outs via the Monitor Output Options, enabling any cue mix bus to be heard in the main monitor speakers.

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Console Overview

Sends Overview
Apollo Twin has five stereo mix buses that are configured and adjusted within Console. The stereo buses are used for the monitor, auxiliary, and cue mixes. Each Apollo input has independent level, pan, and mute controls for each of the stereo mix buses.
Stereo Mix Buses
In addition to the main monitor mix, the following stereo mix buses are available:
Auxiliary The two aux buses are typically used for shared effect processing (to reduce UAD resource usage) for realtime monitoring with time-based effects such as reverb and/or delay. The aux mixes are adjusted via each input's two aux send controls. By default, the aux sends are post-fader and post-mute. The aux sends can be switched to be pre-fader and pre-mute. The Aux Pre / Aux Post function switch for each aux is located in its respective auxiliary bus return strip.
Cues The cue buses are for creating mixes that are different from the main monitor mix. Cues are typically used for performers that want to hear a headphone mix that is different from the main monitor mix, or for routing individual channels or mixes to other equipment. Apollo Twin's two cue mixes are adjusted via the cue sends (labeled "HP" and "Line 3-4") on each input and aux strip. All cue sends are pre-fader and pre-mute so they are not affected by adjustments to the main monitor mix.
Mix Bus Returns
The stereo mix bus returns are used to route the mix to available outputs.
Auxiliary The aux mixes are routed to the aux return strips. Cue sends are available on the aux returns for routing aux effects to the cue mix buses. See Aux Returns for details.
Cues The cue mixes are heard via the selections in the monitor controls section. Cues are routed to available Apollo outputs via a matrix in the Cue Outputs window. The Monitor outputs can be switched to output any cue mix instead of the monitor mix. For cue return details, see Cue Outputs Popover.

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Console Overview

Sends Access
The Sends can be accessed and adjusted in the Overview and Sends views. Note: Sends are not visible in the Inputs and Inserts views.
Overview View An overview of an input's sends state is shown in each input channel strip, as shown below. Clicking this overview opens the Sends Popover, where the send levels can be adjusted. If the Console window is vertically re-sized tall enough, individual send knobs appear in place of the sends overview.
Tip: If a cue bus is currently assigned to the main monitor mix in the Cue Outputs popover, the cue bus color is gray.
Click to open Sends popover

Send Level Indicators
Send Mute Indicators (square above bus name)

Send Fader Indicators Send Bus Name & Colors

The Sends Display within each input channel strip in Overview view

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Console Overview

Sends View
A single send is displayed for all channels simultaneously in Sends View. The displayed send is selected with the SHOW buttons in the View column. Sends view offers longthrow faders for finer control resolution.
Tip: To increase the Send control's resolution when in Sends view, increase the vertical size of the Console window and/or deactivate the SHOW MONITOR button in the View column.

In Sends view, the same send is visible on all inputs. Clicking the available SHOW switches displays the different sends.
Show All Sends Option All sends can be viewed simultaneously by holding the ALT key (on computer keyboard) while clicking any SHOW switch in Sends View.

All sends are visible when a SHOW switch is ALT-clicked

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Console Overview

ALT Monitoring Overview
Apollo Twin features ALT (alternate) monitoring capabilities. ALT monitoring can be used to control an alternate pair of monitor speakers, which is convenient for quickly comparing how a mix sounds through a different set of speakers. ALT monitoring is enabled in the Hardware Settings Panel within the Console Settings window by increasing the ALT Count setting from 0 to 1.
ALT Monitor Connections
The ALT monitor signal is routed to line outputs 3-4.
Note: The ALT channel output assignments cannot be modified.

ALT Monitor Trim
The ALT outputs have their own trim (gain) setting, which is used to offset any volume level differences with the volume level of the main monitor speakers.
As the monitor level is adjusted, the offset is maintained so speakers can be accurately compared at any volume. The ALT trim is located in the Control Room Column.
ALT Monitor Select
The ALT monitors are selected in the OUTPUT section of the Monitor Column.

ALT trim

Monitor Meters
ALT Level
ALT GloVbaallue
Insert Effects
Show/Hide Strips
Open Cue Outputs
Window
DIM Level

Note: The ALT output switch appears here only if the ALT Count setting in the Hardware panel within the Console Settings window is set to a value of 1.

MoniDtoIrM OOpuAttimpounotsunt
DIM Enable

ALT selector

ALT Monitor Volume & Mute

MoMniotonritor LeSvoeul rce

The monitor level knob adjusts the output volume and muting of both the ALT monitors Select

and the main monitors.

Open Sessions Manager

ALT Monitor Knob Color

The colored ring around the Monitor Level knob indicates the active speaker selection, as shown at right.

Green Main monitor outputs are active

Orange ALT 1 outputs are active

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Console Overview

Console Sessions Overview
The Sessions controls provide methods for managing complete Console configurations as session preset files. When a Console session file is saved, the current Console configuration is written to disk.
When a session file is subsequently reloaded, Console is returned to the exact same configuration state, regardless of any changes to Console that were made in the interim.
Note: Monitor settings and hardware settings are global parameters that are not saved within Console session files.
For complete details, see Console Sessions.

Session Column (top-level sessions & folders)
Session Files
Selected Sub-Folder (blue)
Current Session (gray)
Other Sub-Folder (select to reveal contents)

Sub-Folder Column (sessions within sub-folders)

Close Window
Selected Session (blue)

Function Buttons

Load New Session

Load Existing Session

Save Current Session

Create New File

The Sessions Manager popover

Load Selected Session

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Console Overview

Keyboard Focus & Control
Many Console functions can be controlled without using a mouse. When elements on the screen have keyboard focus, they can be quickly navigated with the computer's QWERTY keyboard.
Focus Indication Keyboard focus in Console is indicated by a orange-colored highlight box outlining the screen elements that are targeted for keyboard control.
Focus Navigation Focus between elements can be changed with the computer's TAB key, or by clicking another area of the screen with the mouse.
Focus Control Focused items can be selected by using the up/down/left/right arrow keys and/or the Return/Enter keys.

Typical focus indication. The PRESET column on the left has focus (orange outline) and can be navigated with the up/down arrow keys on the keyboard. The tab key alternates focus between the two columns.

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Console Overview

Adjusting Console Controls
Console uses typical software control techniques to adjust parameters.
2-state switches:Click to toggle the state.
Knobs:Click+drag to adjust, or use the Controls Shortcuts. Console's rotary controls (and UAD plug-in knobs) can respond to Linear, Circular, or Relative Circular adjustments modes. The CONTROL MODES preference is set in PLUG-INS panel within the Console Settings window.
Faders:Click+drag to adjust, or use the Controls Shortcuts.
Drop Menus:Click to view the drop menu contents, then click an item in the drop menu to select the item.
UAD Powered Plug-Ins:Most UAD plug-in controls use the same methods as above. However, some plug-in parameters may have custom controls that are unfamiliar or not obvious. All custom controls are detailed for individual plug-ins in the UAD Plug-Ins Manual.
Controls Shortcuts
In addition to the keyboard shortcuts below, several other shortcuts are available to simplify Console control adjustments:
Fine Control:Continuous controls (knobs and faders) can be adjusted with increased resolution by depressing the SHIFT while adjusting these controls.
Scroll Wheel:Continuous controls (knobs and faders) can be adjusted by using the computer input device's scroll function (e.g., mouse scroll wheel). Hover the cursor over the control and adjust the scroll wheel to modify the parameter value.
Adjust All:If the ALT key is held down while modifying any control, the same control on all inputs (or aux returns) will be simultaneously adjusted. The relative difference is maintained between the same controls until any control reaches its minimum or maximum value.
Return To Default:If the CTRL key is held when a control is clicked, the control will return to its default value. CTRL+ALT+Click will return all controls of the same type to their default value.
Mute/Solo All Toggle:ALT+Click a Mute or Solo switch to toggle the state on all channels.
Drop Menus:Menus continue to display after a single click. The mouse button does not need to be held down to view the menu.

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Console Overview

Keyboard Shortcuts

Console supports the keyboard shortcuts listed in the table below.

Shortcut Name

Keyboard Command

Description

New Session Open Session Save Session

CTRL+N CTRL+O CTRL+S

Save Session As...

CTRL+Shift+S

Overview Inputs Inserts Sends Show/Hide Aux Show/Hide Inputs

CTRL+1 CTRL+2 CTRL+3 CTRL+4 CTRL+A CTRL+I (the letter i)

Show Plug-In Editors CTRL+P

Close All Plug-In Editors CTRL+ALT+W

Close Window

CTRL+W

Create a new default session Load an existing session file from disk Save current session file to disk Save current session as new file with optional rename Switch main view to OVERVIEW Switch main view to INPUTS Switch main view to INSERTS Switch main view to SENDS Show/Hide the Auxiliary Returns Activate Show/Hide Inputs modifiers Bring all open UAD plug-in windows to foreground Close all open UAD plug-in windows Close foreground window

Focus Navigation Element Navigation

Tab

Cycle through orange-outlined areas that can be focused/controlled/navigated with the arrow keys

Left/Right/Up/Down (arrows) Select focused elements with the arrow keys

Cancel Dialog Confirm Dialog

ESC (escape) Return or Enter

Cancel dialog functions such as Plug-In Assign, Preset Select, Save As, Popovers, etc.
Accept dialog functions such as Plug-In Assign, Preset Select, Save As, etc.

Console Settings Undo Edit

CTRL+, (comma) CTRL+z

Open Console Settings window
Revert the last executed function (multiple Undo possible)

Redo Edit

CTRL+Shift+z

Revert the last executed Undo (multiple Redo possible)

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Console Overview

Multiple Undo/Redo
Console supports multiple levels of Undo and Redo for all edit operations. Undo and Redo operations can be performed repeatedly to step backwards and forwards through edit operations as long as the current session is open.
· To step backwards and undo (revert) edit operations, choose Undo from the Edit Menu or type ctrl-z.
· To step forwards and re-execute the edit, choose Redo from the Edit Menu or type ctrl-shift-z.
Undo/Redo Cache
Edits are stored in the Undo/Redo cache. Edits within a particular session can be reverted with Undo/Redo until the cache is cleared. Both of these operations will clear the Undo/Redo cache:
· Console is quit · A different Console session is loaded
Important: Prior Undo/Redo operations cannot be performed after the Undo/Redo cache is cleared.

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Console Overview

Console Reference

This chapter provides in-depth descriptions of all controls within Console. For a general operational overview, see the Console Overview.

Meter Bridge
The Meter Bridge is always visible at the top of the Console window. It displays all visible input channels, signal activity at these inputs, and the Bank Bar, which is used to scroll inputs that are out of horizontal view.
Refer to the diagram below for descriptions in this section.

Mono Meter (single)

Stereo Meter (dual)

Signal Present (green)

No Signal (black)

Channel Input Meters

Bank Bar (gray)

Device Name (optional via right-click)

Non-Hidden Input Channels
The Meter Bridge elements

Channels not in Current Bank (black)

Input Channels
The Meter Bridge represents all Apollo input channels. When an input channel is hidden with the Show/Hide Inputs function, that channel is not displayed in the Meter Bridge.
Channel Meters
Each vertical green meter represents input signal activity in the channel. These small meters mirror the activity of each high-resolution Input Meter that is displayed next to each channel's Input Fader.
Bank Bar
When the Console window does not have enough available horizontal space to display all available input channels, the gray Bank Bar appears within the Meter Bridge. The Bank Bar "floats" on top of all input channels in the Meter Bridge. The Bank Bar is used to change the channels that are visible within the Current Bank.
Note: The Bank Bar is not displayed when all available input channels are visible within the Console window.

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Console Reference

Current Bank
The Current Bank is all input channels that are currently displayed in the main body of the Console window (below the Meter Bridge) as shown in the illustration below. The gray Bank Bar is used to change the Current Bank.
Bank Bar (gray)

Meter Bridge

Slide gray Bank Bar to change Current Bank

Channels not within Bank Bar

Current Bank (visible channels)

Channels not within Bank Bar

Conceptual illustration of the Current Bank. In this example, the Current Bank is analog channels 3 through 6. Moving the Bank Bar brings different channels into the Current Bank view.

Changing the Current Bank
Any of these methods can be used to change the channels within the Current Bank:
Click Click anywhere within the Meter Bridge, but outside of the Bank Bar. The Bank Bar jumps to the channel that is clicked in the Meter Bridge.
Drag Click-hold-drag the gray Bank Bar to slide it across available channels.
Hover Scroll Position the mouse over the Meter Bridge then scroll horizontally with the computer's input device.
Arrow keys When the Bank Bar has keyboard focus, use the computer's left/right arrow keys to navigate the Current Bank.

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Console Reference

Meter Bridge Menu
The Meter Bridge menu provides access to various functions related to the Meter Bridge. To view the menu, right-click (or control-click within the Meter Bridge.
Most functions in the menu are available elsewhere within Console. Show/Hide Offline Devices is available exclusively within this menu.
Show/Hide Device Names See Show Device Names.
Show/Hide Offline Devices Devices in the Hardware panel within the Console Settings window that are not currently connected are displayed in the Meter Bridge by default. To show/hide offline devices, choose this item from the menu.
Identify See Identify.
Rename See Device Name.

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Console Reference

View Column
Note: For an overview of Console's View Columns, see the View Column Overview.
The View Column is always visible at the left side of the Console window. The View Column contains the View Selectors and switches for the View Options (functions) available within each view.
Each View Column also contains several common view elements that are available in every View.

Application Menus (global)
View Selectors

Available Views
Four Views are available in Console: Overview, Inputs, Inserts, and Sends. Each View displays related elements and associated functionality in the main area of the Console window.

Common View Elements
Most display and control elements that appear within the main Console area (see Global Window Elements) in each View are common to all the Views.
Therefore, the common elements are detailed separately from the View Column descriptions.

View Options

View Selectors

Any of these methods can be used to change the current View:
· Click any View Selector in the View Column · Choose the View from the Application Menus · Use the keyboard shortcuts (Ctrl 1, Ctrl 2, Ctrl 3, Ctrl 4)
View Options
The View Options activate the various control functions available within each view. The View Options in Overview, Inputs, and Inserts Views are identical; the View Options change when Sends View is active.

Clear Switches (global)
Settings Switch (global)
The View Column as it appears in SENDS View

View Option functions are performed using latched modifiers. See the Modifiers Overview for details on how to operate the View Option controls. See View Options for descriptions of the individual option functions.

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Console Reference

Global View Column Controls
Several controls appear in all View Columns. These controls (detailed below) have identical functionality in all Views.
Menu Switch The MENU switch is located at the top of the View Column. Clicking the switch reveals the Application Menus, where various Console functions can be accessed.
Default Switch When Option Latch is active with the parameters DEFAULT switch, clicking any control returns the parameter to its default value.
Note: The DEFAULT function is primarily for knob and fader values. It does not apply to any preamp settings, plug-in inserts, SOLO/MUTE switches, monitor levels, customized input names, and similar functions.
Clear Switches The CLEAR switches are located near the bottom of all View columns.
Clear Clips This switch clears all clip indicators and peak hold indicators on all meters.
Tip: Clip and peak hold indicators can be individually cleared by clicking any individual meter.
Clear Solo Whenever Solo is engaged on any channel input, the Clear Solo switch flashes yellow. Clicking the Clear Solo switch deactivates the Solo function of any/all channel inputs.
Tip: Click Clear Solo again to return all channels to their previous Solo states.
Settings Switch The SETTINGS switch is located at the bottom of all View columns. It opens the Console Settings window, where many global functions are defined. For complete details, see Console Settings.

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Console Reference

Modifiers Overview
The View Options in each View Column enable various operations to be performed on the items within the View.
View Option operations are performed by selecting an option to latch the function, executing the operation(s) using Modifiers, then exiting the latched function.

Option Latch
When a View Option switch is clicked, the switch flashes yellow, indicating that the function is latched and ready to be executed using the Modifiers.

Option Unlatch The latched option is unlatched (the switch stops flashing) when:
· Any same or different option switch is clicked · A different View is selected · No operations are executed during the Modifiers Timeout period

Power option latched

Modifiers Timeout

When an option is latched, it is automatically unlatched (times out)

after the Modifiers Timeout period to prevent inadvertent modifications.

The Modifiers Timeout is a preference set in the Display panel within

Timeout preference

the Console Settings window. The default Modifiers Timeout period is six seconds/flashes.

Modifiers

Modifiers are icons superimposed on various elements when a View Option is latched. Modifiers are used to execute the operations. The specific modifiers that appear, and where they are located, depend upon the specific option that is latched.

Inserts modifiers are superimposed on insert slots for individual inserts, and the input channel names for plug-in channel strips.

Modifier Swipe Shortcuts

Paste Modifiers

View Options can be executed extremely rapidly across many channels and/or inserts in the Current Bank using the modifiers swipe shortcuts. When a View Option is latched, click+hold the mouse, then drag vertically and/or horizontally across inserts and/or channel input names to perform the function on all locations that are swiped.

Tip: Modifier swipe shortcuts are the fastest way to perform the same function on multiple inserts.

1. Click+Hold

2. Swipe Across

Click

Swipe

Swipe to rapidly perform the latched function on many inserts

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Console Reference

View Options
The individual View Column Options are detailed in this section. See the Modifiers Overview for details about how to operate the Modifier controls.

View Options: Overview, Inputs, & Inserts Views

The View Options for the Overview, Inputs, and Inserts Views are identical. Each option is described below.

Overview Note: In the Overview View Column, the Power,

View Options

Remove, and Copy modifiers may not be visible if the Console

window size is vertically condensed. To bring all Overview

modifiers into view, increase the vertical window size if

possible, or select a different View.

Overview, Inputs, & Inserts

Power Modifier

View modifier switches

This option toggles an individual plug-in's power state within a single insert. When disabled, the plug-in no longer uses UAD DSP resources.

Click the POWER modifier switch to latch the option, then toggle any plug-in's power state by clicking its modifier, or swipe across multiple modifiers.

Note: This option performs the same function as the Plug-In Power switch in the header within the plug-in editor window.

When POWER is latched, disabled plug-ins are indicated by a gray modifier icon, and active plug-ins have a green modifier icon.

The POWER modifier when latched. Plug-ins are shown powered (left) and disabled (right).
Because this function unloads and loads the plug-in from the DSP, audio artifacts can occur if the power state is changed while audio is being processed by the plug-in.
Tip: To disable individual plug-in processing without audio artifacts, use the power control within the plug-in interface instead, which keeps the plug-in loaded on the DSP.

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Console Reference

Remove Modifier This option deletes the plug-in from the insert slot. When the REMOVE switch is latched, click any insert's modifier to delete the plug-in, or swipe across multiple modifiers.
The REMOVE modifier when latched. Plug-ins are removed by clicking/swiping its modifier. Note: Because this function unloads the plug-in from the DSP, audio artifacts can occur if a plug-in is removed while audio is being processed by the plug-in. Copy/Paste Modifier This option is used to duplicate individual plug-ins or channel strips, and their current settings, from one insert(s) to any other insert(s). Copy/Paste is a two step process. First the insert or channel strip is copied with the COPY modifier, then the copied data is pasted to the destination insert or channel. Copy Individual Plug-In When COPY is latched, click any insert modifier to copy the insert's plug-in.
The insert COPY modifier when latched Copy Channel Strip When Copy is latched, click any input name modifier (at the bottom of the input strips) to copy all plug-ins in the channel inserts.
The channel strip COPY modifier when latched

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Console Reference

Paste Modifier After any insert is copied, the COPY switch changes to PASTE. The copied data can be pasted to multiple destinations while the paste option remains latched. Paste Individual Plug-In After an insert is copied, click or swipe across one or more destinations while the paste switch is latched.
The PASTE modifiers appear on all inserts after copying an insert Paste Channel Strip After a channel strip is copied, click or swipe across any input name modifier to paste the copied channel strip plug-ins into the channel while the paste switch is latched.
The PASTE modifier appears on input names after copying a channel strip

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Console Reference

View Options: Sends View
All View Options within Sends View are described below. See the Sends Overview for related information.

View Options

Sends View Options

Available Sends
Two SHOW AUX switches are always visible. The two SHOW switches are labeled HP (headphone) and LINE 3-4 (line outputs 3 and 4) to reflect the available hardware outputs on Apollo Twin.
Note: The Line 3-4 switch is only visible when the ALT COUNT value in the Hardware panel within the Console Settings window is set to zero.

Apollo Twin USB Software Manual

Console Reference

Show Sends
In Sends View, all mix controls for a single send mix bus, and/or the monitor mix bus, are displayed for all Console inputs simultaneously (see screenshots below).
Note: One send mix can be displayed at a time (the SHOW SEND switches are mutually exclusive).
The displayed mixes are determined by the state of the send and monitor SHOW switches in the Sends View column. The mix is visible when its switch is engaged (lit).
· If the SHOW MONITOR switch is engaged, the send's mix controls are displayed above the monitor mix controls (left screenshot).
· If the SHOW MONITOR switch is disengaged, only the send's mix controls are visible, offering maximum send fader resolution (center screenshot).
· If the SHOW MONITOR switch is engaged and all SHOW SEND switches are disengaged, only monitor mix controls are visible, offering maximum monitor fader resolution (right screenshot).
Tip: Sends View offers long-throw faders and meters for finer control resolution. To increase the control resolution of the mix faders in Sends View, increase the vertical size of the Console window.

Example screenshots of interaction between the send and monitor SHOW switches. By showing only one type of fader (Send or Monitor), the faders are taller, offering finer control resolution.

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Console Reference

Show All Sends Option
All sends can be viewed simultaneously by holding the ALT key (on computer keyboard) while clicking any SHOW switch in Sends View.

All sends are visible when a SHOW switch is option-clicked

Sends COPY TO Modifier
This switch instantly copies the current monitor mix to the send mix that is currently selected with the Available Sends switches.

Tip: The COPY TO function is typically used when a cue mix that is

similar to the monitor mix is needed, but with minor adjustments

(e.g., creating a "more me" cue mix).

COPY TO modifier

The text label within the COPY TO switch changes to the send mix that is currently selected with the Available Sends switches, indicating the destination of the pasted monitor mix.

Caution: Use the COPY TO function carefully. Depending on the states of the monitor mix and the destination send mix, cue output routings, and the volume setting of monitoring systems (e.g., headphones) attached the cue outputs, this function could cause an extreme increase in volume at the destination outputs.

COPY TO Menu
Right-clicking (or control-clicking) the main (silver) monitor faders presents the COPY TO menu. Selecting a destination performs the same function as the COPY TO modifier described above.

COPY TO menu

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Console Reference

Info Bar
The Info Bar is always visible at the bottom of the Console window. It displays and provides access to several important functions.
The Tempo controls are only available in the Info Bar. The Sample Rate and Clock Source controls are also available in the Console Settings window. The UAD Resource Meters have no controls; they are visual indicators only.
Refer to the diagram below for descriptions in this section.

Console Tempo Display & Menu

Clock Source Display & Menu

Sample Rate Display & Menu
The Info Bar

UAD Resource Meters (Display only)

Offline Hardware Display
If the Apollo hardware unit is not properly recognized, the sample rate and clock source displays OFFLINE as shown below.

Sample Rate and Clock when Apollo is offline
Console Tempo Display
This area displays the Console tempo in beats per minute (BPM). Clicking the tempo display opens the Tempo popover window, where a new tempo can be typed or tapped.
About Console Tempo Console Tempo is used for time-based UAD plug-ins (such as delays and modulations) within Console that are set to use Tempo Sync. Console Tempo can be modified by typing a text value, tapping a tempo, or via MIDI.
Note: Console does not receive tempo information from the DAW.
The tempo value is saved within Console session files, and also within DAW files when the Console Recall plug-in is used within the DAW. For details about how to use the Tempo Sync feature with UAD plug-ins, see the UAD System Manual.

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Console Reference

Tempo Popover To display the Tempo popover, click anywhere in the Tempo Display within the Info Bar. The available tempo range is from 1.00 BPM to 999.00 BPM. The default tempo of a new session is 120 BPM.
Adjusting Tempo
Text Entry 1. Open the Tempo window by clicking the Tempo Display in the Info Bar 2. Click the tempo text field, then type a numeric tempo value 3. Press Return or Enter, or click the close button with the mouse.
Tip: To leave the tempo unchanged after entering an (unwanted) value in the Tempo window, press the ESC key or close the window with the mouse.
Tap Tempo 1. Open the Tempo window by clicking the Tempo Display in the Info Bar 2. With the mouse, click the TAP button at least four times to establish the tempo 3. Press Return or Enter, or click the close button with the mouse.
Changing tempo via MIDI Tap tempo can be used to set a new tempo from incoming MIDI data. This method requires any external MIDI hardware and/or MIDI software that is recognized by the OS.
Note: MIDI drivers for the MIDI device may need to be installed and/or configured.
About external MIDI tap tempo control · The MIDI device must be properly configured before it can be used by Console. · MIDI note values or MIDI controller values can be used as the data source. · Console cannot synchronize the tempo to incoming MIDI beat clock.
MIDI configuration/setup 1. Verify the MIDI output device or MIDI software is properly configured and active. 2. In the MIDI panel within the Console Settings window, set the values for DEVICE, TAP TEMPO CHANNEL, and TAP TEMPO EVENT to match the transmitted MIDI data. 3. Transmit the MIDI note or controller (as specified in the previous step) at least four times to establish the tempo. The Tempo Display is RED during this period. 4. After a new tempo value is established, the new tempo is used and the Tempo Display changes back to BLACK. Simply retransmit the MIDI data to apply further tempo updates.

Apollo Twin USB Software Manual

Console Reference

Sample Rate Display
This area displays the current sample rate used for Apollo's A/D-D/A conversion and UAD Powered Plug-Ins processing. When using UAD Powered Plug-Ins, higher sample rates require more UAD DSP resources.
When a DAW is used with Apollo, the sample rate is displayed in gray text, indicating it cannot be modified within Console.
Sample Rate Menu
Clicking the Sample Rate Display presents the Sample Rate Menu, where the current sample rate can be changed.
When a DAW is used with Apollo, the sample rate is set within the DAW. In this case, the sample rate in the Info Bar is displayed in gray text, and the menu is unavailable.
Note: If the current digital input setting is S/PDIF and the sample rate is changed to a rate higher than 96 kHz, the clock source is changed to Internal and the S/PDIF inputs are no longer available.
Clock Display
The Clock Display has three functions: It shows the currently selected clock source, facilitates selection of a different clock source, and indicates when the selected clock source signal is not detected.
Clock Source Menu
Apollo can synchronize to its internal clock or an external clock (ADAT or S/PDIF, depending on the DIGITAL INPUT selection in Console Settings). To select a clock source, click anywhere in the clock display area to view the Clock Source Menu, then select a clock source from the menu.
Tip: The clock source can also be specified in the Hardware panel within the Console Settings window.
Important: When the Clock Source Menu is set to use any external clock source, the sample rate must be manually set to match the sample rate of the external clock.

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Console Reference

No External Clock
If the Clock Source setting is not set to Internal and the external clock signal cannot be detected and/or resolved, then the text in the Clock Display display flashes RED (as shown at right) until a valid clock is detected and/or an alternate clock source is selected. If this occurs, verify connections and external device settings.
Important: Only one device in a digital audio system can be the master clock source. The Apollo clock setting, and the sample rate, must match the master device settings or audio artifacts could occur.
UAD Resource Display
UAD plug-in loads are shown in the Resource Display at the far right of the Info Bar. These three meters (DSP, PGM, and MEM) provide important visual feedback in realtime, by helping to determine which plug-ins to load if available UAD resources are limited.
The UAD resources are displayed as blue bar graphs and as percentages. These meters have no controls; they are visual indicators only.
Tip: The Resource Display mirrors the meters within the UAD Meter & Control Panel program.
Averaged Loads
The load for each meter represents the average for all UAD devices in use. For example, if one Apollo Twin DUO unit is installed, the UAD DSP load is an average of the two SHARC DSP processors in the unit. If an Apollo Twin DUO and one UAD-2 PCIe QUAD card is installed, then the six processors are averaged, and so on.
Individual Loads
Individual DSP loads within a single unit, and the loads of individual devices in a multidevice setup, can be viewed in the System Information panel within the included UAD Meter & Control Panel program.
UAD Plug-In Loads
The amount of UAD resources used by UAD plug-ins vary with each individual plug-in; more complex algorithms require more resources.
Instance Chart The amount of DSP used by each individual UAD plug-in is available in the UAD instance count chart. The chart can help determine which to plug-ins to assign with available resources. The chart is available online:
· www.uaudio.com/support/uad/compatibility/instance-chart.html

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Console Reference

Static Loads
Apollo uses UAD DSP and memory for its internal DSP mixer, therefore the meters will indicate loads (when the hardware is connected) even if UAD plug-ins are not inserted.
DSP
The DSP meter indicates the amount of digital signal processing resources that are being used by all UAD devices in the system.
DSP is the primary hardware resource that powers the UAD Powered Plug-Ins algorithms. When UAD plug-ins are disabled, DSP requirements are decreased.
Note: When UAD plug-ins are disabled, DSP requirements are decreased EXCEPT when the plug-in is disabled using the Power control within the plug-in interface (versus the Power switch in the Console interface).
Program
The Program (PGM) meter indicates how much UAD program memory (PGM) is in use. Program memory is an on-chip memory that is specific to the UAD-2 DSP processor(s) and is used for certain UAD plug-in resources.
Each unique UAD plug-in uses a bit of program memory. If many different UAD plugins are loaded simultaneously, it is possible for this resource to run out before a DSP overload occurs. This point is considered and factored in by the automatic UAD load balancing routines.
Memory
The Memory (MEM) meter indicates the percentage of UAD RAM that is currently in use. It indicates the total available UAD memory available, regardless of the number of DSP processors that are installed.
Memory is used for echo, delay lines, reverb, and similar spatial processing. When UAD plug-ins are disabled but not unloaded, memory requirements are not decreased. In this case, the memory remains loaded so that reverb tails and delay lines are not cut off when the plug-in is disabled.

Apollo Twin USB Software Manual

Console Reference

Channel Input Controls
Note: For related information, see the Channel Strips Overview.

Preamp Controls
Note: The preamp controls do not apply to Apollo 16, which does not feature mic preamps.
Console's preamp controls correspond to the equivalent preamp controls on the Apollo front panel. Adjusting Apollo's front panel will update Console (and vice versa); see Interactions Between Console and Apollo for details.
Unison Controls Some preamp hardware controls (Gain, Low Cut, 48V, Pad, Polarity) are Unison parameters that interact with Unison plug-ins placed in the Unison insert slot.
Unison preamp controls in this section are indicated by the Unison icon in the above paragraph. For complete details, see the Unison chapter. Refer to the illustrations below for element descriptions in this section.

Preamp Preamp Controls Controls

Preamp Preamp Gain Knob Gain Knob
Gain Gain Value Value
Unison Unison Insert Insert

Input Input Display Display

Input Select Switch

Preamp Preamp Option Option Switches Switches

Input Select Switch

Preamp Preamp Gain Gain
Unison Unison Insert Insert

Preamp OptPiroenamSwpitOcphteison Switches

Console's preamp controls as they appear in vertically expanded (left)
and condensed (above) views.
Both views access and display the same functions.

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Console Reference

Preamp Gain
The channel's preamp gain is adjusted with this knob. The input to be adjusted (Mic, Line, or Hi-Z) is determined by the state of the channel's Mic/Line switch or the Hi-Z input (if connected).
Rotating the knob clockwise increases the preamp gain for the channel. The available gain range for all preamp channels is 10 dB to 65 dB for the Mic, Line, and Hi-Z inputs.
Gain Value
The specific amount of preamp gain in decibels is displayed in gray text near the gain control. The relative amount of preamp gain is indicated by the green "LED ring" surrounding the gain control. The LED ring is a different color when Unison is active in the channel.
Front Panel Channel Selection Indicator Dot Apollo's channel selection can be changed using the front panel hardware. The small colored dot that appears next to the gain control (as shown at right, outlined in red) indicates the preamp channel that is currently selected with Apollo's front panel.
Note: The indicator dot in Console changes channels when the channel selection is changed with Apollo's front panel.
Unison Insert
Unison is an exclusive analog/digital integration technology that's built into every Apollo microphone preamplifier. The preamp controls in Console (and the hardware unit) interact extensively with Unison plug-in parameters.
To add a Unison plug-in to the preamp channel, click the unique Unison insert slot located below the Gain control (as shown at right, outlined in red). For details, see the Unison chapter.
Input Select
This switch switches between the mic and line inputs on Apollo's rear panel. Click the Input Select switch or Input Select display to change the input type. The currently selected input type is highlighted. To switch the input type in condensed views, click the currently displayed input type (as shown at right, outlined in red).
Note: Input Select has no effect if the channel's HiZ input is connected, because preamp channels are automatically switched to the Hi-Z input when a ¼" mono (tip-sleeve only) cable is connected to Apollo's front panel Hi-Z input jack.

Apollo Twin USB Software Manual

Console Reference

Low Cut Filter
When enabled, the channel's input signal passes through a low cut (high pass) filter. This 2nd-order coincident-pole filter has a cutoff frequency of 75 Hz with a slope of 12 dB per octave by default (the filter can change when Unison is active in the channel). The Low Cut filter effects the Mic, Line, and Hi-Z inputs. Low Cut is typically used to eliminate rumble and other unwanted low frequencies from the input signal.
48V
When enabled, the 48V switch is red and 48 volts of phantom power is supplied to the Apollo channel's rear panel Mic input. Most modern condenser microphones require 48V phantom power to operate. This option can only be activated when the Mic/Line switch is set to Mic.
Caution: Activate 48V only with compatible equipment such as phantom powered microphones. Incompatible equipment may be damaged by the applied voltage.
Depending on the current configuration of the Apollo and Console, there may be a delay when changing the 48V state to minimize the clicks/pops that are inherent when engaging phantom power. The +48V LED on Apollo's front panel will flash during any delay.
Pad
When enabled, the PAD switch is yellow and the channel's microphone input signal level is attenuated by 20 dB. Pad does not effect the Line or Hi-Z inputs.
Pad is used to reduce signal levels when overload distortion is present at low preamp gain levels, such as when particularly sensitive microphones are used on loud instruments, and/or if the A/D converter is clipping.
Polarity
When enabled, the polarity (aka "phase") switch is yellow and the input channel's signal is inverted. Polarity affects the Mic, Line, and Hi-Z inputs.
Polarity inversion can help reduce phase cancellations when more than one microphone is used to record a single source.

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Console Reference

Sample Rate Convert
Realtime sample rate conversion ("SR CONVERT") is available on the S/PDIF input. This feature eliminates audio artifacts (clicks, distortion, etc) that can occur when the sample rate of external digital devices connected to the S/PDIF input does not match Apollo's internal sample rate. To enable realtime sample rate conversion on Apollo's S/PDIF input, click the SR Convert switch in Console's associated channel strip. Click again to disable the feature. Sample Rate Conversion notes:
· SR Convert is available on S/PDIF or AES/EBU inputs only · SR Convert applies to both L/R inputs (they can't be individually enabled) · SR Convert functions on both L/R inputs whether or not they are stereo linked · SR Convert is unavailable when Apollo's clock source is set to S/PDIF or AES/EBU · SR Convert is unavailable on digital outputs
Console Plug-In Inserts
All Console plug-in insert slots operate the same way. For complete details on all insert functionality and operations, see the Console Plug-In Inserts chapter.
Console plugin inserts

Apollo Twin USB Software Manual

Console Reference

Sends Popover
Note: See the Sends Overview for related information.
The Sends popover window is where all available sends for an individual channel can be adjusted. To access the Sends window, click the Sends display when Overview is active.

Previous/Next Channel Bus Name & Color Send Pan
Send Level & Meter

Console Default Input Name

Close Window Send Mute

The Sends popover

Apollo Twin USB Software Manual

Console Reference

Sends Popover Window Descriptions
Input Name The name of the Apollo input is displayed as the window's title. If the input name is customized in Console, the custom name is displayed here.
Previous/Next Channel These buttons switch the window to display the sends of adjacent channels. The "Ctrl+Left/Right Arrow" keyboard shortcut can also be used to navigate channels.
Tip: To prevent the window from moving when these buttons are used, drag the Sends window to any location other than its default position.
Bus Name & Color The bus name and its color are displayed above each send.
Tip: If a cue bus is currently assigned to the main monitor mix in the Cue Outputs popover, the cue bus color is gray.
Send Pan Adjusts the input's position in the stereo field of the send bus. The pan knobs are not displayed when the input is in stereo linked mode, which forces the stereo channels to automatically pan hard left/right.
Send Mute The Mute button can be used to disable/re-enable the bus send. When the send is active, the button is lit.
Send Level This fader adjusts the input channel's signal level sent to the bus. Up to 12 dB of gain above 0 dB is available.
Send Meter The post-fader signal level of the Send is displayed here.

Apollo Twin USB Software Manual

Console Reference

Monitor Mix Controls

The monitor mix controls within the input channel

strips are for adjusting the signals at Apollo's

Input

monitor outputs.

Pan

Note: Refer to the illustration at right for

descriptions in this section.

Input Solo

Input Mute

Input Pan

This control adjusts the input's position in the stereo panorama of the monitor mix bus.

Input

Stereo Input Pan

Fader

When the input is stereo linked, two pan knobs

appear for the channel enabling independent

panning for both the left and right channels. When

Input Meter

stereo link is activated, the default position of the

dual pan knobs are hard left/right.

Pan with channels unlinked (left) and linked (right)
Input Solo
Solo mutes all input signals, except for any inputs in solo mode. Solo is used to hear individual channels in the monitor mix without having to modify other channels.

Input

Fader

Label

Value

(click to

rename

& LINK)

The Monitor Mix Controls

Note: Input solo does not effect the channel's cue sends, which are pre-fader.

Click the switch to toggle the solo state. The channel is in solo mode when its solo switch is highlighted in yellow. Note that activating mute has no effect if the channel is in solo mode.

Tip: Option-click the solo button to toggle solo on all input channels.

Inactive solo and mute switches

Apollo Twin USB Software Manual

Console Reference

Input Mute
Mute prevents the input channel's signal from being routed to the monitor mix bus (and aux buses that are in POST mode), but not the cue mix buses.
Click the button to toggle the mute state. The channel is muted when its mute switch is highlighted in red.

Tip: Option-click the mute button to toggle mute on all input channels.

The input meter is still active when the channel is muted for a visual reference that there is still a signal coming into the channel even though it isn't heard in the monitor mix.
Note: Input mute does not affect the channel's cue sInePpanundt s, which are pre-fader. All cue sends have their own mute switch.

If Solo is activated on the same channel when muted, thInepumt ute state is overridden andInput

the channel is heard in the monitor mix.

Solo

Mute

Input Fader
This is the channel's main signal level control for the monitor mix. Changes to this control are reflected in the channel's level meter.
Input
The input fader adjusts the channel's level in the monitoFradmer ix bus (the monitor outputs) and the aux mix buses (when set to POST mode), but not the cue mix buses.

Fader Scale

Input

Meter

The numerical labels next to the fader represent the amount of gain or attenuation

applied by the fader. Up to 12 dB of gain above 0 dB is available. A value of 0 dB of

represents unity gain (no gain or attenuation).

Fader Value

The input fader's input meter.

current

setting

displayed

beneath

tIhneput
Label

Copy Mix

(click to rename

All channel fader and pan values for all inputs (the ent&irLeINK)

monitor mix) can be copied simultaneously to any send mix

bus.

To copy the monitor mix to a send mix bus, right-click (or Ctrl-click) any channel fader to display the copy mix menu, then select a destination bus for the mix.

Tip: This is the same function as the Sends COPY TO Modifier within the Sends View column.

Fader Value
The Copy Mix menu

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Console Reference

Input Meter
The input meter displays the signal level of the channel after UAD plug-in processing in the inserts. Depending on the state of the METERING option in the Display panel within the Console Settings window, (either pre-fader or post-fader), this meter will display the level going into the monitor mix bus (post-fader/post-inserts), or the level at the channel's hardware input (pre-fader/post inserts).
Tip: When recording into a DAW, it's typically best to keep metering set to pre-fader so they accurately represent the signal level at the DAW inputs.

Pre/Post metering preference

Input Level Scale
The numerical labels represent digital signal levels. "0" represents 0 dBFS (digital full scale, the maximum level before undesirable A/D clipping). If the level at the Apollo input exceeds 0 dBFS, the meter's clip indicator illuminates. If clipping occurs, reduce the preamp gain, the output level of the device feeding the input, or the output gain(s) of UAD plug-in processing in the inserts.
Peak Hold
The input meters also have a peak hold feature, which holds signal peak values for a specified period of time. The clip and peak hold times can be adjusted in the Display panel within the Console Settings window.

Apollo Twin USB Software Manual

Console Reference

Rename/Link Popover
The Rename/Link popover window is used for customizing input labels and stereo linking adjacent channels.
Console Default Input Name

Previous/Next Channel

Close Window

Rename Field

Stereo Link Switch

The Rename/Link popover

Input Label
By default, the name of the Apollo hardware input is displayed beneath the channel's fader and meter. The input labels can be customized for convenient input identification.

Input labels showing several customized input names

Input Label Menu The Input Label Menu contains the same functions as the Rename/Link window, and also the ability to hide the input from view. To display the Input Label Menu, right-click any Input Label.
Tip: To re-show an input hidden via this menu, use the Show/Hide Inputs function.
To customize a channel input name: 1. Click an input label or choose "Rename" from the Input Label Menu. The Rename/Link popover window appears. 2. Type a custom name for the input. 3. Press Return/Enter or click the close button.
To return to the default name: 1. Click an input label or choose "Rename" from the Input Label Menu. The Rename/Link popover window appears. 2. Press the Delete key to remove the customized text from the NAME field. 3. Press Return/Enter or click the close button.

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Console Reference

Input label Notes · To identify the hardware input when an input name is customized, click the input label. The hardware input name appears at the top of the popover window. · Input labels are stored in Console session files and the Console Recall plug-in. · Auxiliary return labels cannot be customized. · Custom input labels are visible within Console only.
Show/Hide Inputs
Console can hide any input channel strip from view. This feature reduces the need for horizontal scrolling and/or reduces visual distractions when there is no need to see or manipulate a particular input. How To Use Show/Hide Inputs
1. Either choose "Show/Hide Inputs" from the View Menu, use the keyboard shortcut (Ctrl+I), or right-click the Input Label Menu. Modifier icons appear on all Input Labels (see the Modifiers Overview for related details).
2. Click or swipe across the Input Labels. The modifier toggles between green and gray. The input will be shown when its modifier is green, and hidden when gray.
3. Click the DONE switch in the View Column, or use the keyboard shortcut (Ctrl+I). The inputs with gray modifiers are hidden. To bring hidden inputs back into view, repeat the procedure.

Show/Hide Input Notes:
· A minimum of one input channel must be shown. · All input channels remain active even if they are hidden from view. · The Show Aux Returns switch is available to show/hide the aux return strips. · Show/Hide status is stored in Console session files and the Console Recall plug-in.

Apollo Twin USB Software Manual

Console Reference

Stereo Link
Adjacent channels (1+2, 3+4, etc) can be linked to create stereo input pairs. When channels are linked as a stereo pair, any control adjustments will affect both channels of the stereo signal identically.

Note: Only the same type of inputs can be linked (Mic+Mic or Line+Line).
Activation
Stereo pairs are created by activating LINK within the Rename/Link Popover. For preamp channels, activating LINK performs the exact same function pressing the LINK button on Apollo's panel. To stereo link all channels in Console, option-click the LINK button.

Tip: Option-click the LINK button to stereo link all channels.
When Link is activated: · The LINK switch is lit instead of gray · One set of controls is available for the stereo channel
(except pan, as noted below) · All current control settings of the left channel are copied to
the right channel (except pan, as noted below) · All inserted plug-ins in the left channel are converted to
stereo (parameter values are retained) · The input pan knob changes to dual pan knobs · Pan values are forced to hard left and hard right · The send pan knobs are hidden from the interface (pans
are forced to hard left/right with stereo sends) · The input level meter changes to a stereo meter · Any custom input names revert to default input names

Before and after engaging stereo LINK

Deactivation
A stereo pair is separated back into individual channels by clicking the LINK switch when it is active (the LINK switch is gray when deactivated). When LINK is deactivated, all current control settings and inserted plug-ins for the stereo channel remain on the first channel (except pan, which is centered) and the second channel reverts to a default state.
Link Constraints
· Odd-numbered channels can only be linked to the next even-numbered channel. For example, Analog 1 can be linked to Analog 2, but Analog 2 cannot be linked to Analog 3.
· Only the same type of inputs can be linked (for example, an analog input can only be linked to an analog input).
· For preamp channels, only the same input jacks can be linked (for example, a Mic input cannot be linked to a Line input).

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Console Reference

Aux Returns
Aux Overview
Console has two stereo aux (auxiliary) mix buses. Signals are sent to the aux buses via the aux sends in Console's channel input strips. Console's aux returns are used to control and process the signals that are received from those sends.
The controls in Console's aux return strips are similar to the channel input strips, but instead of controlling a channel input, they control the output of the aux mix bus. Both stereo aux returns have four plug-in inserts for Realtime UAD Processing.
The aux sends can be post-fader and post-mute (channel faders must be raised and un-muted to be routed to the aux bus, and the send levels will reflect channel fader changes), or pre-fader and pre-mute (channel faders and mutes do not affect the aux bus).
The aux buses in Console are designed primarily for send/return processing using UAD plug-ins. Using aux buses for effects is a great way to conserve UAD resources. For example, by using an aux for reverb processing, only one reverb plug-in is needed on the aux return instead of putting a reverb plug-in on each individual channel.
Show Aux Returns
By default, the aux returns are not visible. To show the aux returns, enable the AUX switch in the SHOW section of the monitor column.

The Show Aux switch in the monitor column

Aux Notes

Console's Aux returns

· Aux 2 is unavailable at sample rates of 176.4 kHz and 192 kHz.
· The outputs of the aux buses have 32 samples of additional latency compared to the monitor outputs. This is necessary to maintain the lowest possible latency for the dry signals.

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Console Reference

Aux Return Strips
Both of Console's aux return strips are identical. Most of the controls have identical functionality as their equivalent control in the channel input strips.
Refer to the diagram at right for descriptions in this section.
Aux Inserts
The aux inserts are operated using the same methods as the insert controls in the channel input strips. See Console Plug-In Inserts for complete descriptions of the aux insert controls.
Important: If the aux returns are routed as DAW inputs, UAD plug-in processing in the aux inserts is always routed to the DAW, regardless of the Insert Effects setting (aux insert processing is always recorded).
Aux Cue Sends
The aux returns can be routed to any available cue mix buses using the cue sends on the aux returns. There is no cue pan control on the aux returns, because the aux returns are stereo.
The aux cue sends are operated using the same methods as the send controls in the channel input strips. See Sends Popover for complete descriptions of the aux send controls.
Note: When a Cue Source is set to HP and/or Line 3-4, aux returns must be sent to the cue mix bus via these controls for the aux to be heard in the cue mix.

Aux Inserts
Cue Sends
Pre & Post Switches Mono & Mute Switches
Level Fader & Meter

Aux Pre
When the PRE switch is engaged (lit), the aux mix bus is prefader and pre-mute. In PRE mode, the channel faders and mutes do not affect the aux bus.
Tip: Pre-fader mode is useful for configuring a mix bus that is independent of the monitor mix controls (for example, when creating a cue mix).

Aux Name & Color
Aux Return Strip

Aux Post
Post-fader is the default setting for Aux 1 and Aux 2. When the POST switch is engaged (lit), the aux mix bus is post-fader and post-mute. In POST mode, the channel faders must be up and un-muted to be routed to the aux bus, and the aux send levels will reflect channel fader changes.
Tip: Post-fader mode is typically used when configuring an effect send mix so the effect sends will interact with the main channel controls.

Apollo Twin USB Software Manual

Console Reference

Aux Mono
This switch sums the left and right channels of the stereo aux mix bus output into a monophonic signal. The aux return output is stereo when the button is gray and mono when the button is lit.
Aux Mute
The aux mute switch stops the aux return's signal from being routed to the monitor mix. The aux return output is active when the button is gray and muted when the button is lit.
Note: Aux mute does not mute the aux cue sends.
Aux Fader
This is the master signal level control for the aux bus return to the main monitor mix. It does not affect the aux bus return's cue sends. Up to 12 dB of gain above 0 dB is available.
Aux Meter
The aux meter displays the signal level of the aux return after UAD plug-in processing in the aux inserts. Depending on the state of the METERING option in the Display panel within the Console Settings window, (either pre-fader or post-fader), this meter will display the aux bus output level routed into the monitor mix bus (post-fader/post-inserts), or the level of the aux mix bus itself (pre-fader/post inserts).
Input Level Scale The numerical labels represent digital signal levels. "0" represents 0 dBFS (digital full scale, the maximum level before undesirable A/D clipping). If the level of the aux bus exceeds 0 dBFS, the meter's clip indicator illuminates. If clipping occurs, reduce the aux sends from the input channels and/or the output gain(s) of UAD plug-in processing in the aux inserts.
Peak Hold The aux meters also have a peak hold feature, which holds signal peak values for a specified period of time. The clip and peak hold times can be adjusted in the Display panel within the Console Settings window.
Tip: When recording into a DAW, it's typically best to keep metering set to prefader so they accurately represent the signal level at the DAW inputs.

Apollo Twin USB Software Manual

Console Reference

Monitor Column
The Monitor Column is always visible at the right side of the Console window. The Monitor Column contains elements related to monitor outputs, cue outputs, insert effect printing, and session file management, as shown at right.
Note: Settings in the Monitor Column are global functions. They are not saved in individual Console session files.
Monitor Meters
The Monitor Meters display the levels of Apollo's monitor mix bus. Levels displayed here mirror the state of the Monitor 1 2 LED meters on Apollo's front panel.
These meters are before the monitor output level control (pre-fader) and reflect the level of the D/A converters at the monitor outputs.
Important: If clipping occurs, reduce levels feeding the monitor bus by lowering the channel faders and/ or output gain(s) of UAD plug-ins within Console to eliminate undesirable D/A clipping distortion.
Meter Source
When the monitor output signals are changed with the Monitor Output Options, the levels displayed by the monitor meters reflect the changed monitor outputs source signal.
Monitor Level Scale The numerical labels represent digital signal levels. "0" represents 0 dBFS (digital full scale, the maximum level before undesirable A/D clipping). If the level of the monitor bus exceeds 0 dBFS, the meter's clip indicator(s) illuminates.
Peak Hold The monitor meters also have a peak hold feature, which "holds" signal peak values for a specified period of time. The clip and peak hold times can be adjusted in the Display panel within the Console Settings window.

Monitor Meters
Global Insert Effects
Show/Hide Strips Open
Cue Outputs Window
Monitor Output Options
Monitor Level
Open Sessions Manager The Monitor Column

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Global Insert Effects
These buttons globally switch all Console's inserts to either pass all UAD insert effect processing to the DAW (print wet) or not (monitor wet but print dry).
Insert Effects can also be individually switched on a per-channel basis (see Channel Insert Effects). The Global Insert Effects switches override all the individual Channel Insert Effects settings. See Insert Effects Overview additional details.
Important: UAD plug-in processing in Console's Unison and auxiliary inserts is always routed to the DAW (when recording the AUX channels), regardless of the current Insert Effects setting (Unison & aux insert processing is always recorded).
UAD REC (print all wet) When this switch is lit RED and the UAD MON switch is off, all insert effects on all channels are routed to the DAW.
UAD MON (print all dry) When this switch is lit BLUE and the UAD REC switch is off, no insert effects on any input channels are routed to the DAW (except Unison and aux processing, which is always recorded).
Both UAD REC and UAD MON (print wet and dry) When both switches are lit YELLOW, some individual channels are recorded with insert processing and some are recorded dry, as determined by the Channel Insert Effects switches. Clicking one of the global insert effects switches will override the individual channel insert effects settings.
Show Strips
These switches show and hide the visibility of the auxiliary return strips and/or the control room options strip. By default, these strips are not visible. The strips are visible when its SHOW switch is engaged (lit).

The SHOW buttons disengaged (left) and engaged (right)

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Cue Outputs Menu
Clicking this menu opens the Cue Outputs popover window, where the cue mix buses can be routed and mirrored to various outputs. For complete details, see Cue Outputs Popover.
Monitor Output Options
Various monitor options are controlled with the switches in the OUTPUT section.
ALT 1 When ALT monitoring is enabled in the Hardware panel within the Console Settings window (when ALT COUNT is not zero), ALT switches appear here to control which hardware outputs the monitor mix is routed to. See the ALT Monitoring Overview for details about this feature.
Monitor Mono This switch sums the left and right channels of the stereo monitor mix into a monophonic signal. The monitor output is stereo when the button is gray and mono when the button is lit.
Monitor Mute This switch mutes Apollo's monitor outputs. The monitor outputs are muted when the switch is lit. This switch performs the same function as pressing the MONITOR knob on Apollo's front panel. The Monitor Level Indicator (the ring around the level knob) is red when the monitor outputs are muted.
Monitor Level
This is the master level control for Apollo's monitor outputs. It performs the same function as the MONITOR hardware knob on Apollo's front panel.
Monitor Level Value The specific monitor output attenuation value in dB is displayed beneath the Monitor Level control. The relative monitor output level is indicated by the colored ring around the Level control (as with the MONITOR knob's LED ring on Apollo's front panel).

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Monitor Level Indicator In addition to indicating the relative signal level of the monitor outputs, the state of several other functions is indicated by the color of the ring around the monitor level control: Green The main monitor outputs are active with variable level control (normal) Red The main monitor outputs (and ALT monitor outputs, if configured) are muted Orange The ALT 1 monitor outputs are active Flashing The monitor DIM and/or MONO functions are active

Monitor level indications (from left to right): Normal, Mute, ALT 1, and DIM/MONO

Monitor Dot
When the Monitor Level function is active on Apollo Twin's hardware (when its white MONITOR indicator is lit), a green dot is visible in Console adjacent to the MONITOR text label, as circled in red at right.
The dot provides a visual indication that the MONITOR level adjust function is active on the Apollo Twin hardware. When the dot is not visible, adjusting Apollo Twin's hardware level knob will not adjust the monitor level.

Apollo Twin's MONITOR dot

Sessions Switch
This switch is used to access the Sessions Manager Popover (single-click) or the Sessions Menu (right-click), where Console configuration preset files are managed.

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Cue Outputs Popover
Note: For an overview of Apollo's Cues, see Cues Overview. The Cue Outputs popover window is where the cue mix bus returns are configured. To access the Cue Outputs Popover, click the Cue Outputs button in the Monitor Column. Each cue mix bus has its own row of controls, as shown in the diagram below. Because the control set for each row is identical, each control in the rows are only described once.
Close

HP Settings (entire row)
Line 3/4 Settings (entire row)

Cue Source Cue Output

Select

Mono

The Cue Outputs popover

Cue Source Select
These two switches determine the input source for the cue output. The source for the cue is active when its switch is lit.
The source for each cue can be either the associated cue mix or the main monitor mix. The cue sources for each cue are mutually exclusive (both sources cannot be simultaneously active).
Note: To enable the ability to select the cue for the monitor outputs (via the control room Monitor Source Select switches), the cue's source must not be set to MON.
MON
When set to MON (the default), the cue source is Console's main monitor mix, summed with all DAW outputs that are routed to the monitor outs (if applicable). Console's main monitor mix faders, mutes and solos are reflected in the cue output in this mode.

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HP & LINE 3/4
When set to HP, the headphone cue source is the dedicated HP mix, summed with all DAW outputs that are routed to the HP outputs (if applicable).
When set to LINE 3/4, the line outputs source is the dedicated LINE 3/4 mix, summed with all DAW outputs that are routed to the same cue outputs (if applicable).
In this mode, the mix of the cue bus is determined by the cue send controls in the input channel strips and the aux return strips.
Console's faders, mutes, and solos are not reflected in the cue outputs in when HP or LINE 3/4 is selected (Console's cue sends are pre-fader).

Cue Source select

Note: When HP or LINE 3/4 is the selected cue source, signals must be sent to that cue's mix bus (via the cue sends) for the cue mix to be heard in the selected outputs.

Cue Output Mono
This switch sums the left and right channels of the stereo cue mix bus into a monophonic signal. The cue output is stereo when the switch is gray and mono when it is lit.
Note: This switch only controls the cue's outputs. To hear the cue mix in mono when it is routed to the monitor outputs (via the Control Room Source switches), use the Monitor Mono switch instead.

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Control Room Column

The control room column is where various options for the

monitor outputs are configured and selected.

ALT

Level

Show Column
ALT

By default, the control room column is not visible. To show the

Value

column, enable the CTRL ROOM switch in the SHOW section of

the monitor column.

The Show CTRL ROOM switch in the monitor column
ALT Trim Controls
The ALT trim controls are typically used to compensate for different levels of the alternate monitor speakers so they have the same apparent volume as the main monitor speakers.
Note: ALT controls are only visible when the ALT COUNT menu in the Hardware panel within the Console Settings window is set to a non-zero value.
See ALT Monitoring Overview for more details. ALT Level Adjusts the output level of the main monitor mix when it is routed to a different pair of Apollo line outputs via the ALT monitoring function. The default value is 0 dB with an available range of ±30 dB. ALT Value The current ALT level value in dB is displayed.

DIM Level DIM Amount DIM Enable
Monitor Source Select
Control Room column

DIM Controls
DIM is used to quickly reduce the listening volume in the control room by a set amount and quickly return to the prior volume.
DIM Amount This control adjusts the amount of attenuation level that is applied to the main monitor mix when the DIM switch is engaged. The default value is -20 dB with an available range of 0 dB to -60 dB. Available DIM values are stepped (not continuous).
DIM Enable When engaged (lit), the monitor outputs (and ALT outputs, when active) are attenuated by the DIM Amount.
Tip: Press DIM quickly to latch the function. Press and hold DIM for 0.5 seconds to momentarily engage the function and deactivate DIM when the button is released.

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Monitor Source Select
These switches select the mix bus that is sent to Apollo's monitor outputs. The source is selected when its switch is lit.

Monitor

When MONITOR is selected, the main monitor mix, summed with any DAW outputs assigned monitor outputs (if applicable), is routed to the monitor outputs.

Monitor source select switches

HP, LINE 3/4
When HP or LINE 3/4 is selected, the respective cue mix, summed with any DAW outputs assigned to the respective HP or LINE 3/4 outputs (if applicable), is routed to the monitor outputs.

CUE INACTIVE Dialog
HP or LINE 3/4 can be selected as a monitor source only if its respective source in the Cue Outputs Popover is not set to MON.
Allowing those settings would be the same as simply selecting MONITOR as the source with the monitor source select, except that you wouldn't be able to determine the current route without opening the cue outputs window.
If the CUE INACTIVE dialog appears when attempting to enable a cue as the monitor source, close the dialog then open the CUE OUTPUTS window and switch that cue's source from MON to the cue mix.

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Console Sessions
The Sessions controls provide methods for managing complete Console configurations as session preset files. When a Console session file is saved, the current Console configuration is written to disk. When a session file is subsequently reloaded, Console is returned to the exact same configuration state, regardless of any changes to Console that were made in the interim.
Content of Session Files
Console session files contain most, but not all, Console settings. The specific parameters saved and not saved are listed below: Saved All knob, slider, and menu values, all inserted UAD plug-ins, settings contained within the plug-ins, input labels, show/hide status, and settings in Console Settings window (except those listed below). Not saved All Monitor Gain, Line Output Reference Levels, Clock Source, Sample Rate, Monitor Outputs Digital Mirror, and Cue Outputs settings are global parameters that are not session-specific. Most of these settings are managed in the Console Settings window.
Default Session Files Location
By default, session files are saved to, and loaded from, this location: · C:\Users\UserName\AppData\Roaming\Universal Audio\Sessions
Although session files can be saved to (and loaded from) any location on disk, using the default location enables the most convenience because Console always uses this location for the Sessions Manager window and also Open/Save dialogs presented by the OS.
Note: Session files must reside in the default location to appear in session lists within Console.
Sessions Sub-Folders
The Session Files folder can contain one level of sub-folders for additional session organization capability. The contents of sub-folders (if any) are displayed in the SUBFOLDER column when a folder in the SESSION column is selected.
Session Files Suffix
Console's session files have the ".uadmix" suffix. The suffix is added to session files automatically when saving to disk; however, the suffix is not displayed in the file save dialog (the suffix should not be manually typed when saving a session file).
Note: Without the .uadmix suffix, the session files will not be visible in the "Open" file dialogs or the Sessions menu, and they won't be opened when they are double-clicked in the OS file system.

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Session Files Access
Session files can be saved and loaded via several methods: The Modified Session Dialog, the File menu in the Application Menus, and/or the Sessions Menu.
Session Name
Session names are displayed in the Meter Bridge at the top of the main Console window ("My Session" in the screenshot below), below the word SESSIONS within the Settings Switch, and at the top of the Sessions Manager window. Session names are created when the file is saved; they can also be renamed via the OS file system.
Modified Session Name
When any Console setting is changed after the session was saved, an asterisk (*) appears after the session name, as shown at right. This is a convenient visual reminder that the session is modified and may need to be saved for future use. To clear the asterisk, save the session.
SYNC Session Name
When a DAW project containing the Console Recall plug-in is opened that has the SYNC function in the plug-in enabled, the session name changes to "- Sync Session -" indicating that the DAW has sent session settings to Console. See SYNC for related details.
Modified Session Dialog
If the current Console session has been modified and a new Console session is loaded, a dialog displaying the current session name in quotes appears with option switches (the session name in quotes does not appear if the session has never been saved). The behavior of the option switches in this dialog are detailed below.
Important: This dialog does not appear when a Console session is loaded via the Console Recall plug-in's SYNC function. See SYNC for details.
Don't Save All modifications to the current Console session are discarded and the session is loaded (or created, if new session).
Cancel The current Console session remains active and the attempt to load the Console session file is canceled.
Save The current session is saved to disk and the session is loaded. If the session has never been saved to disk, this switch displays "Save As..." which opens the file save dialog.

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Sessions Manager Popover
The Sessions Manager popover window is where Console session preset files are managed. The Sessions Manager window contains the SESSION and SUB-FOLDER columns and several function switches. The columns and switches are used to navigate and manage the session files.
Refer to the illustration below for descriptions in this section.

Session Column (top-level sessions & folders)

Sub-Folder Column (sessions within sub-folders)

Close Window

Session Files

Selected Session (blue)

Selected Sub-Folder (blue)
Current Session (gray)
Other Sub-Folder (select to reveal contents)

Function Buttons

Load New Session

Load Existing Session

Save Current Session

Create New File

The Sessions Manager popover

Load Selected Session

Sessions Access
To access the Sessions Manager window, single-click the area at the bottom of the Monitor Column.

Click to open the Sessions
Manager

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Sessions Manager Contents
Session folder contents can be organized via the OS file system. File locations in the system are reflected within the Sessions Manager.
Note: Organizing session files within subfolders is performed within the OS file system.
SESSION Column
All items within the Default Session Files Location are displayed in the SESSION column. If more sessions or folders reside in the column than are currently within view, a scroll bar appears. Double-click any session in the SESSION column to load it, or click a sub-folder (if any) to display sessions within the sub-folder in the SUB-FOLDER column.
Note: Sub-folders are indicated in the SESSION column by small disclosure triangles near the right side of the SESSION column.
SUB-FOLDER Column
If the SESSION column contains one or more folders, selecting the folder will display its contents in the SUB-FOLDER column. Double-click any session in the SUB-FOLDER column to load it.
Sessions Manager Function Switches
The Sessions Manager contains switches that perform file management tasks. Click a switch to perform the operation on the currently selected preset or sub-folder.
New Creates a new Console session with default settings (default settings cannot be changed). If the current session has been modified, a dialog appears allowing you to save it first.
Open... Opens the operating system's standard "Open File" dialog for loading existing session files from disk.
Tip: Session files can also be opened by double-clicking .uadmix files from within the operating system's file system.
Save Saves the current modified preset file in place. If the preset was not previously saved (if the file doesn't exist), the Save As window appears.

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Save As... This option opens the operating system's standard file save dialog window so the current session can be named and saved to disk as a new session file.
Important: Session settings will not be properly saved if the "/" (forward slash) or "?" (question mark) characters are in the filename. Avoid these and other special characters when saving session files.
Load Loads the session that is currently selected within the Presets Manager window (a session is selected when highlighted in blue).
Tip: A session can also be loaded by double-clicking the session or typing Return (or Enter) when the session is selected.

Sessions Menu
The Sessions Menu provides quick access to sessions functions without opening the Sessions Manager. Click any item in the menu to perform the function.
Items in the menu are divided into three sections. File management options are in the top section, existing session files and folders that reside on disk are listed in the center section, and cached (overwritten) sessions are listed in the bottom section.

Display Sessions Menu
To access the Sessions Menu, right-click the Sessions Switch located at the bottom of the Monitor Column. When the menu is displayed, clicking an item in the menu chooses that item.
Refer to the diagram on the next page for Sessions Menu descriptions.

Right-click to show the Ses-
sions Menu

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Session File Functions

Top-Level Session Files Current Session (check mark)
Sub-Folder Name (blue names)
Sub-Folder Contents (beneath blue names)
Cached Sessions (timestamps)

All Session Files & Folders in Default Session Location

The Sessions Menu
Session File Functions
The New, Open, Save, and Save As functions listed here have the same functionality as the Sessions Manager Function Switches.
Sessions List Existing session files that reside in the Default Session Files Location are displayed in the center section of the sessions menu. (Session names in diagram are examples only.) Select a session from the list to load the session file. If the current session has been modified, the Modified Session Dialog appears.
Note: Session files must reside in the Default Session Files Location and have the .uadmix suffix to be visible in the Session Menu.
Sub-Folders Sub-folder names in the Sessions Menu are displayed in blue. Session files within the sub-folder are displayed beneath the blue sub-folder name (session files not within subfolders appear at the top of the sessions list).

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Cached Sessions
Cached sessions appear in the bottom section of the Sessions Menu. Cached sessions are the same as session files, except they don't reside in session files on disk. Instead, these sessions are automatically created and stored in a temporary cache.
Why Cached Sessions Exist
When a DAW project containing the Console Recall plug-in is opened and the plug-in's SYNC function is enabled, the Console settings contained in the DAW project overwrite the current Console settings. The cached sessions are used to recover the overwritten data if desired. See SYNC for details about the feature.
When Cached Sessions Appear
A cached session is automatically created every time a DAW project containing the Console Recall plug-in is opened and the plug-in's SYNC function is enabled. In this scenario, the SYNC function loads the Console session contained in the DAW project, and the previously-active Console settings are moved into the cached sessions menu.
The previously-saved Console session's filename is retained in the cached session, and a timestamp is prefixed so it can be easily distinguished from other sessions. The five most-recently cached sessions appear in the list.

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Window Title Bar
The Window Title Bar is the topmost strip in the Console and Console Settings windows, as shown below.
The Window Title Bar
Window Name In the main Console window, the current session filename is displayed in the title bar. If the session has not yet been saved to disk, "Console" is displayed here. Close Clicking the "x" button closes the Console or Console Sessions window. If the window is the last open window, the Console program is quit.
Note: Console's current settings are saved to disk when quit; when Console is subsequently launched, those settings are transferred to Apollo. Minimize Clicking the "-" button reduces the window to the Windows Task Bar. The window can be restored by clicking the minimized window, or any method detailed in Accessing Console. Zoom Clicking the "+" button expands the Console window to the maximum size available on the screen where the window currently resides.

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Application Menus
Various Console functions can be accessed from the Application Menus. Selecting an item from the drop menus performs the function.
Console's Application Menus
Tip: Many menu functions can also be accessed using the keyboard shortcuts shown next to the item in the menu.
Menu Button
The Menu button displays the application menus. The button is located at the upper left of the main Console window, at the top of every View Column.
File Menu
Session Files Location By default, all Console session files are stored at the following location within the Windows file system (the same location used by the Sessions Manager Popover):
· C:\Users\UserName\AppData\Roaming\Universal Audio\ Sessions Tip: Console sessions can be organized via the OS file system. File locations in the OS are reflected within the Sessions Manager.
New Creates a new Console session with default settings (default settings cannot be changed). If the current session has been modified, a dialog appears allowing you to save it first.
Open... Opens the operating system's standard "Open File" dialog for loading existing session files from disk. Session files can also be opened by double-clicking .uadmix files from within the OS's file system.

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Save
If a session file was previously saved, selecting this option writes the current settings to the file with the same name, overwriting the previously saved file.
If the current session has never been saved, the operating system's standard "Save File" dialog appears so a new session file can be named and saved to disk.
Save As...
This option opens the operating system's standard "Save File" dialog so the current session can be named and saved to disk as a new session file.
Important: Session settings will not be saved if the "/" (forward slash) or "?" (question mark) characters are in the filename. Avoid these and other special characters when saving session files.

Edit Menu
Note: See Multiple Undo/Redo for an overview of Undo/ Redo.

Undo When a parameter value in the Console window is edited, the change can be reverted with the Undo command. By executing Undo again, edits can be stepped backwards repeatedly. The number of Undo steps is essentially unlimited. The Undo cache is active until a new or different session is loaded or Console is quit.
Redo When the Undo function (above) is executed, the original edit can be restored with the Redo command. By executing Redo again, previous Undo's can be restored repeatedly. The number of Redo steps is essentially unlimited. The Redo cache is active until a new or different session is loaded.
Remove All All plug-ins can be categorically deleted from Console by selecting an item from the sub menu.
Enable All All plug-ins can be categorically enabled from Console by selecting an item from the sub menu.
Disable All All plug-ins can be categorically enabled from Console by selecting an item from the sub menu.

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Remove/Enable/Disable Sub-Menu Plug-Ins The function is performed on all Console plug-ins. Insert Plug-Ins The function is performed on all channel insert plugins. Aux and Unison plug-ins remain inserted. Aux Plug-Ins The function is performed on all auxiliary plug-ins. Channel and Unison plug-ins remain inserted. Unison Plug-Ins The function is performed on all Unison plug-ins. Channel and aux plug-ins remain inserted.
View Menu
Show/Hide Items
Show/Hide Aux Returns Shows the aux returns when they are hidden, and hides them when they are visible. This item performs the same function as the Show Aux Returns switch in the monitor column.
Show/Hide Inputs Allows unused Console inputs to be hidden from view. For details, see Show/Hide Inputs.
Show/Hide Offline Devices Shows offline devices when they are hidden, and hides them when they are visible. This feature is typically used for adjusting Console sessions when all Apollo devices are not currently connected.
View Items
Note: Items in this section perform the same function as clicking the View switches in the View column.
Overview Switches Console to Overview view. Inputs Switches Console to Inputs view. Inserts Switches Console to Inserts view. Sends Switches Console to Sends view.

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Show Plug-In Editor Windows Brings all open UAD plug-in editor windows to the foreground (if any). If ALWAYS ON TOP in the Display panel within the Console Settings window is set to PLUG-INS, this function has no effect (plug-in editors are always in the foreground in this mode).
Note: This item applies only to UAD plug-ins used within Console, not those used within a DAW.
Close All Plug-In Editor Windows Closes all open UAD plug-in editor windows (if any).
Settings Opens the Console Settings window, where various global parameters are configured. See Sessions Manager Popover for details about the window.
Help Menu
Documentation This item opens the local folder containing all Apollo product documentation files. Consult the documentation when you need specific operational information. After opening the Documentation folder, double-click a documentation file to open it.
Tip: Use the search function within the PDF reader program to quickly find information about a particular topic.
Contents of the documentation folder: · Apollo Software Manuals (one for each connection protocol) · Apollo Hardware Manuals (one for each unique hardware model) · UAD System Manual · UAD Plug-Ins Manual · Direct Developer (3rd-party) plug-in manuals Note: For related information, see Apollo Documentation Overview.

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Console Plug-In Inserts

The Inserts section of each input strip is where UAD Powered Plug-Ins are selected and used for Realtime UAD Processing. Four insert slots are available per Console channel strip; therefore up to four UAD plug-ins can be serially chained (stacked) per input within the constraints of available DSP resources.
Note: Only UAD Powered Plug-Ins can be loaded in Console. However, tracks with non-UAD plug-ins used within a DAW can be routed into Console via Virtual I/O.

Inserts Display
The inserts display shows the name of currently loaded plug-ins (if any). An abbreviated name is shown for longer plug-in names due to space constraints. In expanded views, an icon representing the plug-in is also displayed. Refer to the illustration below for element descriptions in this section.
Inserts Display

Channel Strip Presets (click for popover)

Inserts Rec/Mon Indicator
(click to switch)
Active Plug-In (click to edit)

Standard (non-Unison) Insert Slots
1 4

Disabled Plug-In (gray background)
Offline Plug-In (red background)
Empty Insert (click to assign)

Record/Monitor Indicator (INSERTS view only)

Channel Insert Effects Switch (INSERTS view only)
The Channel Inserts

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Signal Flow
Audio signals in a Console channel flow through the inserts serially from top to bottom. Therefore, if more than one plug-in is inserted in a channel, the location of a plug-in within the inserts can impact the sound of the channel. Plug-ins can be reordered by dragging them to change the serial processing order.

Unison Insert
Apollo's Unison technology is activated when a Unison-enabled UAD plug-in is loaded in the dedicated Unison insert located above the preamp options (as shown at right, outlined in red).
Note: Audio on preamp channels is processed by the Unison insert (if active) before the channel inserts.
The Unison insert is only available on Apollo preamp channels. However, Unison inserts are operated exactly the same way as standard channel inserts. See Unison for related information.

Click area outlined in red to insert a Unison plug-in

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Insert Assign Popover
Clicking any empty insert slot displays the Plug-Ins Manager popover window. Click any UAD plug-in from any category in the popover to load the plug-in into the insert.

The Insert Assign popover
Edit Plug-In
If the insert already contains an assigned plug-in, clicking the insert opens the Plug-In Editor Window, where plug-ins can be adjusted and/or plug-in presets can be managed.

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Insert State Indicators

The state of loaded plug-ins within each insert can be determined by the background color of the slot:
Active (dark gray) The plug-in is active and processing audio. The Studer A800 insert at right indicates this state.
Disabled (light gray) The plug-in has been disabled via the power switch in the header of the plug-in edit window (or via the disable function in the insert options menu). The UA 1176LN plug-in at right indicates this state.

Note: Disabling a plug-in via the power control within its editor window (versus the Power switch in editor view) does not change the background color.

State Indications

Offline (red) The plug-in is disabled because there is not enough UAD resources, it is unlicensed and the demo has expired, and/or the UAD authorization needs updating. The API 560 insert at right indicates this state.
Empty (+) The insert is not populated with a plug-in. Click the"+" symbol to open the Assign window for loading a plug-in into the insert.

Insert Hover Options

Three commonly-used plug-in functions become available when the mouse cursor is hovered over any insert containing a plug-in.

The function icons appear on top of the plug-in name, as shown at right. To perform the function, click the associated hover switch.

Remove Unloads the plug-in from the insert.

Assign Opens the Assign popover window to replace the current plug-in with a different plug-in.

Remove Assign Power

Power Disables/Enables plug-in processing and conserves UAD resources. The plug-in remains in the insert.

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Insert Options Menu
To display the Insert Options menu, right-click (or control+click) any insert.
The options available in the menu vary depending on the state of the insert (e.g., empty or loaded) and contents of the copy/paste clipboard. Each insert option is described below.
The menu has two sections under blue headings: Plug-in options that apply to the individual insert, and Channel options that apply to all channel inserts in the strip.

Plug-In Options
Copy Copies the plug-in that is in the insert so it can be pasted into another insert. This option does not appear if a plug-in is not loaded in the slot.
Paste Pastes a plug-in that was previously copied into the insert. This option does not appear if a plug-in was not previously copied.

Insert Options Menu

Note: All copy/paste functions also copy/paste the current settings of the plug-in.

Assign Opens the Assign popover window for selecting an insert plug-in. If the insert already contains a plug-in, the loaded plug-in is replaced with the newly-assigned plug-in.
Remove Unloads the plug-in from the insert.
Disable Disables plug-in processing and conserves UAD resources, but the plug-in remains in the insert.

Channel Options
Presets Opens the channel presets popover window for managing channel presets.
Open Channel Strip Opens the channel strip editor, where all plug-ins in the channel inserts can be viewed and managed within a single window.
Remove All Unloads all plug-ins from all channel inserts in the channel.
Disable All Disables plug-in processing and conserves UAD resources for all plug-ins in the channel inserts, but the plug-ins remain in the inserts.
Enable All Resumes plug-in processing for all disabled plug-ins in the channel inserts,.
Open Channel Strip This feature groups and displays the interfaces of all plug-ins currently loaded in the inserts of a strip in a single window, offering a convenient method of organizing channel plug-in windows. The single window, containing up to four plug-in GUIs, can be moved and arranged on screen as desired in a single motion. See Channel Strips for details.

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Channel Insert Effects
Note: For an overview of Insert Effects, see Insert Effects Overview.
Channel Insert Effects Switch
This switch determines whether or not Realtime UAD Processing occurring within an individual Console input is routed to the associated DAW input. For additional details, see Global Insert Effects.
Tip: Insert Effects can be switched for all channels simultaneously with the Global Insert Effects switch.

Channel Insert Effects Switch (INPUTS display only)

Channel Insert Effects Switch (OVERVIEW & INPUTS display)

Two channel insert effects switches are available in Console's inputs. The large channel insert effects switch (above left) is visible when INSERTS view is selected in the View Column. A smaller switch, in the form of a colored indicator dot (above right), is available in both OVERVIEW and INSERTS views. For either type of switch, click the switch to change the REC/MON state.
REC (print wet) The indicator is RED and UAD processing in all inserts in the channel is routed to the associated DAW input for recording.
MON (print dry) The indicator is BLUE and the unprocessed signal is routed to the DAW input. UAD processing is heard in monitor outputs only.
Important: UAD plug-in processing in Console's Unison inserts is always routed to the DAW regardless of the current Insert Effects setting (Unison processing is always recorded).

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Plug-In Editor Window
Clicking any insert that contains a plug-in opens the editor window, where UAD plug-in parameters can be adjusted and/or plug-in presets are managed. Multiple editor windows can be open simultaneously. By default, each opened editor window is offset so one window doesn't completely cover another.
Tip: To open each editor window at the same screen location, shift+click the insert.
Refer to the illustration below for element descriptions in this section.

Title Bar
Function Buttons

Console Input Console Insert Slot

Minimize Close

Channel Strip Enable/Disable
Plug-In Controls

Insert Select/Assign
Menu

Presets Manager Popover

Plug-In Power

Copy Paste Plug-In Plug-In Settings Settings

(controls displayed in the main window area vary per UAD plug-in)

UAD Toolbar

Preset Manager Menu (use within DAW)

Information Menu (manual & web page)

The Plug-In Editor Window

Title Bar
The editor window's title bar is displayed at the top of each editor window. Console Input The Console input containing the insert is displayed. Console Insert The insert slot number (1 4) or "Unison" is displayed. Close Closes the editor window. Minimize Minimizes the editor window by placing it in the Windows Taskbar. Click the minimized window in the Taskbar to restore it.

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Function Switches
The function switches appear between the title bar and the plug-in controls.

Channel Strip Enable/Disable
This switch engages Channel Strip mode, all UAD plug-ins within the channel inserts can be controlled within a single window. For details, see Channel Strips.

Insert Select/Assign Menu
This switch presents the Select/Assign drop menu, where different inserts can be selected for editing, or a different plug-in can be assigned to the current insert.

Select
When more than one insert is populated in the channel, choosing a different plug-in from the menu selects that plug-in for editing. In the example at right, three of the channel's inserts are populated. If only one insert is populated, only the current plug-in is displayed.

Assign
Choosing this menu item opens the plug-in assign popover window, for replacing the plug-in currently in the insert.

Note: When a plug-in is replaced via the assign function, any customized settings in the replaced plug-in are lost (if they weren't saved as a preset). However, they can be recovered until a different Console session is loaded by using the Undo function.

The Select/Assign menu

Presets Manager Popover
This switch presents the Presets Manager popover window, where plug-in settings can be saved and loaded. For details, see Presets Manager.
Note: With narrow plug-ins, the switch icon at right is displayed instead of the word "PRESETS."

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Plug-In Power This switch deactivates the insert's plug-in by unloading it from the SHARC processor. When deactivated, the plug-in no longer uses UAD resources. Click the switch to change the state. The plug-in is enabled when the switch is orange in color, and deactivated when the switch is gray. Deactivated plug-ins are indicated in the channel inserts by a light gray background.
Important: Because this function unloads and loads the plug-in from the DSP, audio artifacts can occur if the enable state is changed while audio is being processed by the plug-in. To disable individual plug-in processing without audio artifacts, use the power control within the plug-in interface instead, which keeps the plug-in loaded on the DSP.
Copy Plug-In Settings This switch copies the parameter settings of the plug-in to the clipboard so they can be pasted into another instance of the same plug-in.
Paste Plug-In Settings This switch pastes plug-in parameter settings, that were previously copied to the clipboard, into the current plug-in. If the switch is unavailable (gray), no settings are available in the clipboard or the plug-in title is different.
Note: Copied plug-in settings can only be pasted into the same plug-in title.
UAD Toolbar
The UAD Toolbar is displayed at the bottom of each UAD plug-in, including when the plug-in is used within a DAW (outside of Console). For complete UAD Toolbar details, see the UAD System Manual.
Preset Manager Menu This drop menu can be used to manage UAD presets within a DAW. To manage presets within Console, use the Presets Manager instead.
Note: The Presets Manager is recommended for managing presets within Console (instead of the UAD Toolbar) because of its enhanced functionality.
Information Menu This drop-menu contains two shortcuts for accessing information about the UAD plug-in. Manual Opens the UAD Plug-Ins Manual for UA-developed plug-ins, or the manual provided by the developer for 3rd-party plug-ins. Web Info Opens the default web browser and goes to the plug-in product page on the Universal Audio website (internet connection required).

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Channel Strips
Channel Strips are where all UAD plug-ins within the four channel inserts are displayed and controlled within a single editor window.
Note: Unison plug-in editors in preamp channels are not included within Channel Strips. However, Unison preamp settings are stored within Channel Strip Presets.
Open Channel Strip Presets Manager Apollo Hardware Input Channel Strip Enable/Disable
All Plug-Ins in Channel Inserts
The Channel Strip editor window

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Channel Strip Enable

To merge all of a channel's plug-ins into a single window, click the Channel Strip Enable switch within any plug-in in any channel insert.

To disable Channel Strip mode and return to viewing the channel plug-ins individually, click the switch again.
Channel Strip Presets

Click the Enable switch to activate Channel Strip view

A Channel Strip preset contains all settings for all plug-ins within the channel strip. Channel strips presets are saved and/or loaded via the Presets Manager.

Accessing Channel Strip Presets
The Presets Manager for Channel Strips can be accessed with these two methods:
· Click the Presets Manager button within the Channel Strip edit window. · Click anywhere near the Channel Strip Presets disclosure
triangle or the word "INSERTS" above the channel inserts in OVERVIEW or INSERTS views (as shown at right). This method can be used to load Channel Strip presets when plug-ins are not already loaded in the channel inserts.

Click area outlined in red to access Channel
Strip presets

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Console Plug-In Inserts

Presets Manager
The Presets Manager is where individual UAD plug-in settings and Channel Strip settings are managed after a plug-in is assigned to an Insert. Preset tasks are performed in the Presets Manager popovers, which are accessed from the Plug-In Editor Window.

The Presets Manager popovers

Presets Overview
A preset is a complete collection of settings for an individual plug-in that is saved as a disk file so the settings can be subsequently recalled. Presets are typically used to save and recall favorite plug-in settings. Thousands of factory presets are installed with the software, or they can be user-created.
Preset files have the ".fxp" suffix (file suffixes are only visible in the OS file system when the "Hide extensions for known file types" option is unchecked in Control Panel>Appearance and Personalization>Filter Options>Show hidden files and folders).

Factory Presets

Factory presets are plug-in settings created by the plug-in developers for typical use case scenarios. All UAD plug-ins developed by Universal Audio include a batch of factory presets. They can be used as-is, or modified as desired.

All factory presets, and factory preset folders, are read-only. They cannot be overwritten, renamed, deleted, or moved. However, factory presets/folders can be saved under a different name or in a different file location.
Factory presets/folders are indicated by a lock icon at the left of a preset or folder icon. User presets/folders do not have the icon.

Factory preset & folder icons (indicated by
lock) as they appear in the Presets Manager

Note: Not all UA Direct Developer (3rd-party) plug-ins include factory presets.

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Presets Folder Location
All factory and user preset files for UAD plug-ins are stored at the following location within the Windows file system:
· C:\Program Files (x86)\Universal Audio\Powered Plugins\Presets
Tip: User presets and folders can be organized via the OS file system (e.g., Windows Explorer). File locations in the OS are reflected within the Presets Manager.

Plug-In's Presets Folder
Inside the Presets folder above are folders named with the title of each UAD plug-in. Each of these folders contain all factory and user presets for that particular plug-in. This is the plug-in's presets folder. The contents of this folder is displayed in the PRESET column within the Presets Manager.
Note: User presets can only be saved to the plug-in's presets folder.

Presets Sub-Folders
Each plug-in's presets folder can contain one level of sub-folders for additional preset organization capability. The contents of sub-folders (if any) are displayed in the SUB-FOLDER column when a folder in the PRESET column is selected.

Channel Strip Presets
A Channel Strip preset is a complete collection of plug-ins within a single channel, and all parameter settings within those plug-ins, that is saved as a disk file so the channel strip preset can be subsequently recalled into the same or a different channel.
Tip: To activate Channel Strip view, click the Channel Strip icon in the Edit Window. Channel Strip mode is active when the switch is orange colored.
Channel strip preset files have the ".uadchannel" suffix (file suffixes are only visible in the OS file system when the "Hide extensions for known file types" option is unchecked in Control Panel>Appearance and Personalization>Filter Options>Show hidden files and folders).

Channel Strip Presets Folder All Channel Strip presets reside in the Channel Strips presets folder. The contents of this folder is displayed in the PRESET column within the Presets Manager.
Note: Channel Strip presets can only be saved to the Channel Strip presets folder.

Channel Strip Presets Folder Location
All Channel Strip files are stored at the following location within the Windows file system:
· C:\Program Files (x86)\Universal Audio\Powered Plugins\Presets\Channel Strip
Channel Strip Presets Sub-Folders The Channel Strip presets folder can contain one level of sub-folders for additional channel strip preset organization capability. The contents of sub-folders (if any) is displayed in the SUBFOLDER column when a folder in the CHANNEL PRESET column is selected.

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Presets Manager Popover
The Presets Manager popover window contains the PRESET and SUB-FOLDER columns and several function switches. The columns and switches are used to navigate and manage the preset files.
Tip: Plug-in settings are loaded instantly as they are selected in the columns.
Refer to the illustration below for descriptions in this section.

Preset Column (top-level presets & folders)

Sub-Folder Column (presets within sub-folder)

Plug-In Assign
User Folder (no lock icon)
Factory Folder (lock icon)
Default Preset (lock icon)

Selected Folder (blue)
User Preset (no lock icon)
Function Buttons

Open Save Window

Create User Folder

Move User Delete User

Preset or Preset or

Folder

The Presets Manager popover

Close Popover
Selected Preset (blue)
Scroll Bar

PRESET Column
All items within the plug-in's preset folder are displayed in the PRESET column.
Click any preset in the PRESET column to instantly load it, or click a sub-folder (if any) to display presets within the sub-folder in the SUB-FOLDER column.
If more presets or folders reside in the column than are currently within view, a scroll bar appears.

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SUB-FOLDER Column
If the PRESET column contains one or more folders, selecting the folder will display its contents in the SUB-FOLDER column. Click any preset in the SUB-FOLDER column to instantly load it.
If more presets reside in the column than are currently within view, a scroll bar appears.
Presets Manager Function Buttons
The Presets Manager contains switches to name, save, and perform other file management tasks. Click a switch to perform the operation on the currently selected preset or sub-folder.
Save Saves the current modified preset file in place. If the preset was not previously saved (if the file doesn't exist), the Save window appears.
New Folder Creates a new sub-folder. Sub-folders appear in the left column of the Presets Manager.
Move Opens the Save window where the selected preset can be moved to a different location within the presets folder, with the option to rename the preset.
Delete Deletes the selected preset file from disk and removes it from the presets list. A confirmation dialog appears before the file is deleted.

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Save Preset Popover
The Save Preset popover window is where presets and sub-folders can be named and moved. It appears when the Save or Move switches within the Presets Manager window are clicked.
Refer to the illustration below for descriptions in this section.

Return

Name Field Cancel Operation
Top-Level Folder
User Sub-Folder Selected User Sub-Folder

Save Button
User Sub-Folders within Plug-In's Presets Folder

The Save Preset popover
Save Preset Popover Functions
Return Returns to the main Presets Manager popover. Close Exits the Preset Manager and returns to the Plug-In Editor window. Name Field When creating a new preset or sub-folder, enter a unique name here. Cancel Cancels the operation and returns to the main Presets Manager popover. Save Creates the disk file or sub-folder.

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Console Plug-In Inserts

Console Settings
Console Settings Overview
Global parameters for Apollo and Console are configured in Console Settings. All Console Settings are detailed in this chapter.

The Console Settings window showing the Hardware panel selected
Console Settings Window
Console Settings are within the Console Settings window. The Console Settings window is available from within the Console program. The Console Settings window can be opened using any of these methods:
· Choose View>Settings from Console's Application Menus · Click the SETTINGS switch at the bottom of the View Column · Use the ctrl+comma keyboard shortcut within Console · In the Windows System Tray (lower right of screen), right-click the Settings switch in
blue UA diamond icon, then choose "Console Settings" from the View Column contextual menu

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Console Settings

Console Settings Panels
Controls within the Console Settings window are arranged according to related functionality. Each set of related settings are contained within a single panel. Four panels are available in the Console Settings window: Hardware Settings related to Apollo hardware device setup Display Settings related to how and what items are displayed in Console Plug-Ins Settings related to UAD plug-ins used within Console MIDI Settings for setting up MIDI control of Tap Tempo within Console
Accessing Settings Panels
Each of the four Console Settings panels is accessed by clicking the panel's name at the top of the Console Settings window. The panel is selected and displayed when its name is illuminated.

Panel names at the top of the Console Settings window

Changing Settings

Unless otherwise noted, all values within the Console settings window are changed by either choosing a different value from a drop menu, or entering a new values directly.
Drop Menus Values with drop menus are indicated by a disclosure triangle at the lower right of the value field. To change these settings, click the item and choose a different value from its drop menu.

Typical disclosure
triangle

Direct Entry Values with direct text or numerical entry have a lighter gray background and do not have a disclosure triangle at the lower right of the value field. To change these settings, click the field and type a new value with the keyboard, then type the Return/ Enter key.

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Console Settings

Hardware Settings Panel
The Hardware panel is where Apollo's system-level audio interface I/O settings such as sample rate, clock source, and output reference levels are configured. These settings are used by DAW programs when they are configured to use Apollo as the audio interface. Even when Console is not open, these settings are stored by the Apollo drivers for use by other host programs.

The Hardware Settings panel
About Sample Rate & Clock Settings
Behavior and control of these two settings depend on the operating environment: Without a DAW Sample Rate and Clock Source settings define the active sample rate and clock source for Apollo when a DAW is not used (when Console is the only host program). With a DAW The sample rate is managed within the DAW and is typically specified when creating a new DAW session.
Tip: These settings can also be viewed and changed via Console's Info Bar.

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Console Settings

Sample Rate
This setting defines the sample rate that is used for Apollo A/D and D/A conversion and UAD Powered Plug-Ins processing. When using UAD plug-ins, higher sample rates require more UAD DSP resources.
When a DAW is used with Apollo, the sample rate is set within the DAW. In this case, the sample rate field is gray, and the menu is unavailable.
Important: When the Clock Source parameter is set to use any external clock source, Apollo's sample rate must be manually set to match the sample rate of the external clock.
Note: If the current digital input setting is S/PDIF and the sample rate is changed to a rate higher than 96 kHz, the clock source is automatically changed to Internal and the S/PDIF inputs are no longer available.
Clock Source
This setting determines the master clock source for A/D and D/A conversion. The available values are Internal clock, or external clock from S/PDIF or ADAT (depending on the DIGITAL INPUT setting).
If the Clock Source setting is not set to Internal and the external clock signal is not detected, then the text in the Clock Source display is RED (if this occurs, verify connections and external clock device settings).
Note: Only one device in a system can be the master clock. This setting must match the host DAW setting or audio glitches and/or distortion could occur.
Buffer Size
This setting determines the hardware I/O buffer size used by a DAW. As values are decreased, DAW throughput latency decreases, but the computer's CPU load increases. Conversely, as values are increased, DAW throughput latency increases, and the computer's CPU load is reduced. For related information, see Latency Basics.
Available buffer size values are dependent on the current Sample Rate value. If values in the Buffer Size menu are gray and cannot be selected, change the Sample Rate value.
Note: If audio artifacts occur during DAW or WDM playback (clicks, pops, stuttering, etc), the buffer size may need to be increased.
Important: Buffer Size applies to use with a DAW and WDM applications only. It has no effect on Console's hardware monitoring features or Realtime UAD Processing within Console.

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Console Settings

USB Safety Buffer
The USB Safety Buffer defines the buffer size of the USB audio streaming protocol layer within the computer's operating system. It is separate from the I/O Buffer Size setting.
Note: The USB Safety Buffer only applies when using ASIO audio with a DAW or other audio applications. The setting has no effect when monitoring with Console.
To optimize performance with some computers, the USB Safety Buffer setting may need to be increased. If ASIO and/or WDM audio playback is compromised, change the USB Safety Buffer setting to a larger value.
Note: Stop WDM and ASIO playback before changing the USB Safety Buffer. Applications using audio may need to be relaunched if the setting is changed.
Available values are Minimum (default), Small, Medium, Large, and Maximum. These settings are associated with the latency values shown in the table below. Note that the current USB Safety Buffer setting changes the values available in the Buffer Size menu. If settings in the Buffer Size menu are gray and cannot be selected, decrease the USB Safety Buffer setting to a smaller value.

Value
Minimum Small
Medium Large
Maximum

Latency
1 ms 2 ms 4 ms 8 ms 16 ms

USB Safety Buffer Settings

Minimum Buffer Size

44.1 kHz & 48 kHz 88.2 kHz & 96 kHz 176.4 kHz & 192 kHz

128

256

128

256

512

256

512

1024

512

1024

2048

1024

2048

4096

Available USB Safety Buffer values

Input Delay Compensation

Input Delay Compensation maintains phase alignment across Console's analog and digital inputs when certain UAD plug-ins are used. See Input Delay Compensation in Console for a complete explanation of this feature.
When enabling Input Delay Compensation, it's usually best to start with the Short value (100 samples) to minimize latency. The default value is Medium.

Input Delay Compensation Values

Setting Name Extra Delay (samples)

Off

Short

100

Medium

200

Medium-Long

300

Long

1000

Note: Changes to this setting do not take effect until the DAW is quit.

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Input Delay Compensation Exceeded Dialog A dialog will appear in Console if the compensation amount is exceeded on a channel. If this occurs, either increase the IDC value or reduce upsampled plug-ins usage on the channel to maintain phase alignment.
Tip: Input Delay Compensation and phase alignment is only important when multiple Console inputs are used for a single source (such as a drum kit using multiple microphones). For the lowest possible latency if not using multiple inputs for a single source, turn Input Delay Compensation OFF.
ALT Count
This setting determines the number of ALT (alternate) monitor outputs that are available within Console. Between zero and two ALT outputs can be set (one maximum with Apollo Twin). The default value is zero. For an overview of this feature, see the ALT Monitoring Overview.
Important: Increasing the ALT count overrides any other assignments using Line outputs 3 and 4.
Monitor Operating Level
This menu switches the operating level of the monitor outputs. Available selections are 20 dBu and 14 dBu.
Note: This setting is unavailable with the original (silver) Apollo, which does not feature an adjustable operating level.
Devices Column
The active Apollo device is displayed in this column. If the icon is grayed out, the device is offline.

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Console Settings

Options Column
Device-specific settings are shown in the Options column.
Note: Settings in the Options Column apply only to the specific unit in the Devices Column.
Device Name Apollo's default device name can be changed. The device name is displayed in the "Connecting to Apollo" window that appears briefly during system connection and optionally in the Meter Bridge.
Note: Text in this field cannot be modified when the device is offline.
Identify Clicking the Identify switch will cause the unit's front panel LEDs to flash in a pattern.
Note: This switch is unavailable when the device is offline.
Output Reference Levels This drop menu sets the reference level for line outputs 3 and 4. The line output reference levels can be set to 10 dBV or +4 dBu. The value is usually set to match the nominal input level of devices connected to these outputs (a setting of +4 dBu outputs a higher signal level than 10 dBV).
Digital Input This menu selects the digital input type (ADAT or S/PDIF) to be used by the TOSLINK optical connector and Console's digital input channels. Apollo Twin supports S/PDIF digital input at sample rates up to 96 kHz. If the current setting is ADAT and the sample rate is higher than 96 kHz, when S/PDIF input is selected, the clock source is changed to Internal and the S/PDIF inputs are no longer available.

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Console Settings

Channel DSP Pairing
Overview Channel DSP Pairing allows multiple UAD plug-ins that are inserted in a single Console input channel strip to span across two paired DSP cores. This feature effectively doubles the amount of Realtime UAD Processing DSP loading that is available on a single Apollo input.
Note: Channel DSP Pairing changes the way available DSP resources are allocated. The feature does not increase the total amount of available DSP.
When enabled (the default setting), Channel DSP Pairing is automatic. Simply insert UAD plug-ins in Console inputs as usual, and input DSP resources are automatically distributed across DSP pairs as efficiently as possible.
Note: Individual UAD plug-ins must fit within a single DSP core, even when Channel DSP Pairing is available. A single UAD plug-in cannot span across paired DSPs.
A maximum of two DSP cores can be paired with a single Apollo input. More than one DSP pair can be allocated, so multiple Apollo inputs can take advantage of the feature. The Channel DSP Pairing concept is illustrated below.

Input 1

Input 2

DSP

Core

Pair 1 Output 1

Pair 2 Output 2

Conceptual Channel DSP Pairing illustration. Note that the signal from an input is output from its paired DSP.

Input 1

DSP Core 1

Fender `55 Tweed Deluxe
(70%)

(available DSP)

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Pair 1
140

Korg SDD-3000 Digital Delay
(35%)
(available DSP)

DSP Core 2
Console Settings

Input 1

Input 2

Channel DSP Pairing Example
If an additional UAD plugD-iSnP inserted DoSnP a ConsoleDSiPnput chanDnSPel strip that doesn't fit on the first DSP core (if the cCorme bined DSCoPreload exceCeordes 100%)C,otrhe e plug-in(s) will load on a paired DSP core, as illustrated below.
In this specific example, the FePnaidr e1 r `55 Tweed DeluxePpailru2g-in DSP core load is 70% (at 44.1 kHz). The Korg SDD-3000 is aOlustopulto1aded on the sameOiuntppuutt2, but since its load is 35% (and the combined load exceeds 100%), Channel DSP Pairing automatically loads the second plug-in on the paired DSP.

Input 1 Input 1

Input 2

DSP Core
DSP Core 1

DSP FenderC`5o5re
Tweed Deluxe (70%)
Pair 1
(availaObuletpDuSPt)1

Pair 1 DSP Core

DSP KoDriggiStaDlDD-e3Cl0ao0yr0e
(35%)
Pair 2
(available DSP)
Output 2

DSP Core 2

Input 1

Output 1

With Channel DSP Pairing, more than one DSP-intensive UAD plug-in can be loPaidr e1d on the same Console input

Input 1

InpuKto2rg SDD-3000

CBDwouSitmiPhldpopluienatxgirCCohchnaaannnthnnbeeeellpDuDrCSesDSoePvrSPePido1PTwPuFtaeeoas(nie7rddi0iceernD%(riarTxeng`wv)elF5auaee5gaxi(nmele7.addt0beeDp%lree`l)sl5Due5iSx,mPeP)tauhirlet1adnieaogurKaoDsNrmiggep(ivS3tealD5blu%1D(De0a-gD)e37vlil-0a3gaoIi0i(niylnt3wa0pa5blu%lcDeti)elhD3llaSuayPis)ntrsattCheDosarSetPh2Cwoapwoituo(ml7lCd5%hoan)rmeobettrshbaenpoonsesible

In this example, InpuTetlet1ronhixaLAs-2aAn electric DSP pair, while Input 2(1h6%as) a vocal mic

guitwa/ErQpenlaubgle-din plug-i(n40%ch) ain

chain (Neve

(Fender + Korg) using one + Teletronix) using a second

DSP pair. A third DSP pair uses the remainUiAn1g176DLNS(PO13u%top)nut c1ore two before pairing to the

third DSP core.

Pair 2

Pair 3

InputO1utput 2

Pair 1

Fender `55 Tweed Deluxe
(70%)
Teletronix LA-2A
(16%B)igger Plug-In Chains

Pair 2

InpuOt u2tput 1 Input 3

Korg SDD-3000 Digital Delay
(35%)
Neve 1073 w/EQ enabled
(40%)
UA 1176LN (13%)

Pair 3

Output 3
Capitol Chambers (75%)
More Virtual Channels

Output 2

Output 1

Output 3

Complex Channel DSP Pairing example Active Setting (gold)

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Console Settings

Pair 2

Pair 3

OutputIn2put 1

OInuptuptu2t 1

Output 3

Control Elements

Input 3

Pair 1

Channel DSP Pairing is controlled by a row of buttons beneath the control name. To

change DSP allocatioFnendvear l`5u5es, click a buttoKnoDrigginiStaDltDhD-e3el0a0yr0ow. The feature is active when DSP

PAIRS displays a vaTlwueeedgDreeluaxeter than 0.

(35%)

Capitol Chambers

ArescitphreocDaSlPacPtAioInRSseTvtealselturh((o71neo06i%%wxiLs))AA-i2npAcorlleoa'sseidn,tetrhnealVDIwRN/SEeT(QvP4Ue0en%1rAa0e)b7Lsl3eodCuHrcAeNs NarEeLaSllvoaclauteed(i7s.5%d)ecreased. This

UA 1176LN (13%)

Pair 2
Bigger
Plug-InOutput 2 Chains

Output 1

Pair 3
More
VOiruttupuatl3 Channels

Bigger Plug-In Chains

Active Setting (gold)
Channel DSP Pairing control

More Virtual Channels

Available DSP Pairs The number of available DSP pairs isAactdivjeuSsettatibngle(.goAldp)ollo rackmount models can be set to a maximum of four available DSP pairs (default value of 2), while Apollo Twin models have a maximum of two available pairs (default value of one).
Note: On Apollo SOLO core models, Channel DSP Pairing is not available. On all models, decreasing Virtual channels conserves DSP.

Channel DSP Pairing control as it appears with Apollo Twin (left) and Apollo rackmount models (right)

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Console Settings

Relationship to Virtual Channels When Channel DSP Pairing is enabled (when DSP PAIRS displays a value greater than 0), the number of available Virtual I/O channels is reduced.
Virtual channels that are disabled by the DSP allocation are removed from Console's main window. Disabled Virtual channels appear in gray italic text in the I/O Matrix, indicating that they are inactive.
Tip: Reducing the number of active Virtual I/O channels also conserves DSP used by Apollo's internal digital mixer, which can be useful when you need just a bit more DSP.
Channel DSP Pairing Latency When Channel DSP Pairing is active, input latency is slightly increased across all Apollo inputs. The amount of latency increase depends on the Apollo model:
· All Apollo rack and desktop models (except X Series HEXA models): 69 samples · All Apollo X Series HEXA models: 74 samples · If a HEXA DSP core interface model (e.g., Apollo x8) is connected in multi-unit
configurations, input latency is increased by 74 samples across all connected models.
Note: Input latency is only increased when DSP is actually paired, even if DSP PAIRS is set to a non-zero value.
Channel DSP Pairing Notes · Channel DSP Pairing values are saved within individual Console sessions files. Unlike other Console hardware settings, it's not a global setting. · Channel DSP pairing is unrelated to UAD plug-ins inserted in the DAW, where UAD plugins automatically load on any available DSP. · In multi-unit configurations, each Apollo unit has its own Channel DSP Pairing setting, and DSP can only be paired within an individual unit. · Channel DSP Pairing applies to internal DSP with Apollo models only. It does not apply to UAD-2 DSP Accelerator models or Arrow audio interface. · Channel DSP pairing is unavailable on Auxiliary and Talkback channels, nor at sample rates of 176.4 and 192 kHz.

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Console Settings

Display Panel
Various Console display options are set within the Display panel.

The Display panel
Metering
Pre-Fader When set to Pre-Fader, an input's Channel Meter indicates the level at the Apollo input, regardless of the Channel Fader setting. With this setting, changing the fader level will not change the Channel Meter.
Tip: When set to Pre-Fader, the Channel Meters mirror the signal level being recorded in the DAW.
Post-Fader When set to Post-Fader, changing an input's Channel Fader will change the Channel Meter.
Note: The Metering Menu affects the Channel Meters of Console's channel inputs only. It does not affect the Aux Meters or the Monitor Meters.
Clip/Peak Hold
Tip: The Clip and Peak indicators can be cleared at any time with the Clear Clips button.
Clip Hold Time This drop menu sets the duration that the red signal clip indicators in the input, send, and monitor meters are displayed before turning off. The available values are None, 1 second, 3 seconds (default), 5 seconds, 10 seconds, or Infinite.

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Console Settings

Peak Hold Time This drop menu sets the duration that the signal peak indicators in the input and send meters are displayed before turning off. The available values are None, 1 second, 3 seconds (default), 5 seconds, and 10 seconds.
Always On Top
When set to NONE (the default value), a UAD plug-in editor window can be covered by the Console window when Console is the foreground program. When set to PLUG-INS, UAD plug-in editor windows always float on top of the Console and Console Settings windows (when Console is the foreground program), so they can always be seen and adjusted.
Note: This setting only affects UAD plug-in window behavior within Console. It does not apply to UAD plug-ins when they are used in other host programs.
Show Device Names
When set to ON, Apollo's Device Name is displayed in the Meter Bridge. Tip: This feature can also be accessed from the Meter Bridge Menu.
The Meter Bridge with Show Device Names OFF (left) and ON (right)
Modifiers Timeout
This option sets the period, in seconds, used for Option Latch operations.

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Console Settings

Plug-Ins Panel
Various UAD plug-in options are set within the Display panel.

The Plug-Ins panel
Controls Mode
This setting determines how UAD plug-in parameter knobs respond to adjustment. Three control modes are offered: Circular, Relative Circular, and Linear. The behavior of each mode is described below.
Tip: This setting is also available in the Configuration panel within the UAD Meter & Control Panel program.
Linear (slider) In Linear mode, the knob is adjusted by dragging horizontally or vertically instead of by rotating. This behavior is similar to moving a physical fader.
Circular (jump) In Circular mode, the software knobs behave similar to physical rotary knobs. Values are changed by clicking on the knob then rotating in a circular direction. When the edge of the knob is clicked, the parameter value jumps to the mouse position.
Relative Circular (grab) Relative Circular mode operates similar to Circular mode, but the knob value does not jump to the mouse position when clicked. Instead, the knob value is modified relative to its original value.

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Console Settings

In Relative Circular mode, click anywhere on the knob to make an adjustment originating at the original value (it's not necessary to click on the current knob position).
Tip: To increase resolution when in adjusting rotary controls in circular and relative circular modes, increase the radius of the mouse relative to the knob while dragging (move the mouse farther away from the knob while dragging in a circular motion).
Plug-In Column
All installed UAD plug-ins are displayed in the list in alphabetical order. Settings for each UAD plug-in are contained within its row. Vertically scroll the list to see plug-ins that are not currently in view.
Status Column
The authorization status and/or demo state of the plug-in is displayed here. The info shown mirrors the status shown in the Plug-Ins panel within the UAD Meter & Control Panel program.
Tip: To start a plug-in demo, click START DEMO in the Plug-Ins panel within the UAD Meter & Control Panel program, or in the UAD Toolbar at the bottom of each UAD plug-in editor.
Hide Column
These switches prevent UAD plug-ins from being visible from within Console. Click a plug-in's HIDE switch to toggle the state. The plug-in is hidden when HIDE is yellow and its title and icon are dim. This function is used to restrict the availability of assignable plug-ins in plug-in lists. By default, all plug-ins are visible, even if they are unlicensed or the demo period is expired. By hiding plug-ins that are unlicensed or expired, only plug-ins that can process audio are exposed, which can be convenient for more rapid assignments.
Info Column
These switches open the plug-in's product pages at www.uaudio.com in the default web browser, providing a general overview the plug-in.
Tip: For detailed operational info for each plug-in, see the UAD Plug-Ins Manual.
Buy Column
Adds an unlicensed plug-in to the shopping cart at the UA online store. Confirm you are logged in to the desired account at uaudio.com when purchasing the plug-in.

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Console Settings

MIDI Panel
Console supports the ability to use MIDI to remotely set the tempo used for the Tempo Sync feature. The MIDI panel is where the specific MIDI controls are set.

The MIDI panel
MIDI Device
Sets the MIDI device to be used as the source for MIDI control. To set the device, click the MIDI DEVICE menu and choose a device from the drop menu.
Note: MIDI drivers for the MIDI device properly installed and configured to appear in the MIDI Device menu.
Tap Tempo Channel
Specifies the MIDI channel to be used for MIDI control. To set the channel, click the field and enter a numerical value between 1 16.
Tap Tempo Event
Console can receive note or controller data for MIDI control of Tap Tempo. These two settings define the MIDI data type and value used for MIDI control. For instructions, see Changing tempo via MIDI.
MIDI Type Menu Sets the MIDI data type to be used as the source for MIDI control. To set the data type, first click the drop menu then choose CONTROLLER or NOTE from the menu, or send the value from the MIDI controller.
MIDI Value Field Sets the MIDI data value to be used as the source for MIDI control. To set the data value, first click the field then enter a numerical value between 0 127, or send the value from the MIDI controller.

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Console Settings

MIDI Note Table When NOTE is used as the MIDI type, the table below can be used as a reference for MIDI note values.
MIDI note numbers by note name and octave

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Console Settings

Console Recall Plug-In
Console Recall Overview
Console Recall is a DAW plug-in supplied in VST, RTAS, and AAX 64 formats. It is inserted and used within host DAWs as with any other plug-in.
Note: The Console Recall plug-in is not required to use the Apollo interface hardware, the Console program, or a DAW.
The primary function of the Console Recall plug-in is to store the current Console configuration within the DAW via the SYNC (synchronize) switch in the plug-in. It can also be used to view and adjust Apollo's monitor output level, mono, and mute states without having to leave the DAW.
SYNC
When a DAW project containing the Console Recall plug-in is saved and the SYNC switch is enabled in the plug-in, the current state of the Console program is stored within the Console Recall plug-in.
Note: The SYNC switch is in Console Recall, not the Console program.
When the DAW project file is subsequently reloaded, Console is automatically restored to the previous settings state, regardless of any changes to Console or Apollo that were made in the interim. Since plug-in settings are saved within DAW project files, using SYNC enables Console's current state to be stored within the DAW project file without saving or loading Console sessions presets via the Console Sessions functions. This feature ensures the DAW project will sound exactly the same when reloaded at a later date, even if Console contains customized settings that might affect the audio, such as send mixes, signal routings, and/or Realtime UAD Processing.

SYNC Open Switch Console

Monitor Meters

Monitor Level

The Console Recall plug-in interface

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Monitor Options
Console Recall Plug-In

Console Recall Controls
Most Console Recall plug-in controls are duplicates of those found in the Console program. The exceptions are the SYNC switch, and the CONSOLE switch, which opens the Console program.
Monitor Controls
The exact same control descriptions in the Console program apply to the Console Recall plug-in controls. Refer to the Console Reference chapter for descriptions of the duplicated controls:
· Monitor Meters · Monitor Level · Monitor Output Options
Console Switch
The Console program can be opened by clicking the CONSOLE switch. Note that the Console program does not need to be open when using the DAW with the Console Recall plug-in; Console settings are always captured by the Console Recall plug-in as long as the SYNC switch is engaged.

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Console Recall Plug-In

How To Use Console Recall
To use Console Recall, simply place one instance of the Console Recall plug-in into any insert slot in the DAW project. The plug-in is installed to the same location as all other UAD plug-ins. The name of the plug-in is "Console Recall" (without the UAD prefix).
Important: To avoid unpredictable results, do not insert more than one occurrence of the Console Recall plug-in within any single DAW project.
Because the plug-in does not process audio in any way, the insert location isn't critical. Although it can be placed on any audio track, virtual instrument track, aux bus, output, etc, placing it on the master output is recommended for consistency since projects usually contain an output channel.
Upon instantiation, the plug-in's Monitor Level, Mono, and Mute controls mirror the equivalent controls in the Console program. Enabling SYNC causes the current Console settings to be stored within the DAW project.
Enabling SYNC
When Console Recall is first loaded, the SYNC switch is disabled (gray). To activate SYNC, click the switch so it is engaged (lit).

SYNC switch when disabled (left) and enabled (right)
Enabling SYNC does not change the Console settings; SYNC doesn't do anything until the DAW project file is saved and subsequently reloaded.
Important: SYNC saves the Console settings within the DAW file, not the Console program. Therefore the DAW project file must be saved to disk to retain the Console settings in the project.
Effect on Session Name in Console
When a DAW project is loaded that contains the Console Recall plug-in with SYNC enabled, the Session Name in the Console program displays "- Sync Session -" and the display is dimmed.

Console session name when SYNC is enabled in DAW

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Console Recall Plug-In

Loading Synchronized DAW Projects
If SYNC was active when a DAW project file containing Console Recall was saved, then loading that DAW project will load the Console settings saved in the plug-in, and the Console settings that were active before the DAW project was loaded are overwritten.
Note: The Console settings that were active before the DAW project was loaded can be easily recovered if desired using the Cached Sessions feature in the Sessions Menu within the Console Program.
If SYNC was inactive when a DAW project file containing Console Recall was saved, then loading that project will not change the Console settings that were active before the DAW project was loaded.
Session State Parameter
The Console Recall plug-in has a parameter called "Session State" that is exposed for DAW automation but is not in the plug-in interface. Session State ensures all changes to Console settings and the DAW session are captured by the Console Recall plug-in. If something related to Session State appears in the DAW, it's best to just ignore it.
Important: To ensure proper functionality when SYNC is enabled in Console Recall, do not create or edit DAW automations with the Session State parameter.

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Console Recall Plug-In

Unison
What is Unison?
Unison is an exclusive analog/digital integration system that's built into every Apollo microphone preamplifier. It's the first and only way to truly emulate classic analog mic preamp, guitar amp, and pedal behaviors in an audio interface. Unison is an audio processing breakthrough that starts right at the source, the input stage, allowing Apollo's mic preamps to sound and behave like the world's most soughtafter tube and solid state preamps, guitar amps, and pedals -- including their allimportant impedance, gain stage "sweet spots," and component-level circuit behaviors. Apollo's mic preamps are designed for high resolution, ultra-transparent translation from microphone to converter. This clean hardware design is the foundation for adding software color with UAD plug-in processing. Unison-enabled UAD preamp, guitar amp, and pedal plug-ins reconfigure the physical input impedance, gain staging response, and other parameters of Apollo's mic preamp hardware to match the emulated hardware's design characteristics. Because the hardware and software are intricately unified, Unison provides continuous, realtime, bidirectional control and interplay between Apollo's physical mic preamp controls and the software settings in the Unison plug-in interface. Controls on Apollo's front panel dynamically adjust the Unison plug-in's parameters to match the target preamp/guitar amp/pedal behavior. Correspondingly, changing a setting in the Unison plug-in interface will modify Apollo's front panel settings. Because Unison can be active on more than one mic channel, a complement of premium emulated hardware is available concurrently.
Dedicated Unison Inserts (preamp channels only)

Unison is enabled by loading a UAD Unison plug-in into a dedicated Unison insert in Console

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Unison

Unison Features
Unison technology enables these Apollo features, all with Realtime UAD Processing:
· Alternate microphone preamplifier sound Apollo's ultra-transparent mic preamps inherit all the unique sonic and input characteristics of the emulated hardware preamp, guitar amp, or pedal, including the mic, line, and Hi-Z inputs.
· Realistic tandem control Unison facilitates seamless interactive control of Unison preamp plug-in settings using Apollo's digitally-controlled hardware and/ or the plug-in interface. All equivalent preamp controls (gain, pad, polarity, etc) are mirrored and bidirectional. The preamp controls respond to adjustments with precisely the same interplay behavior as the emulated hardware, including gain levels and clipping points.
· Hardware input impedance All Apollo mic preamps feature variable input impedance in analog hardware that can be physically switched by Unison plugins for physical, microphone-to-preamp resistive interaction. This impedance switching enables Apollo's preamps to physically match the emulated unit's input impedance, which can significantly impact the sound of a microphone. Because the electrical loading occurs on input, prior to A/D conversion, the realism is faithful to the original target hardware preamp.
· Tactile gain staging Apollo's top panel preamp knob can independently adjust all gain and level parameters available within the Unison plug-in via Gain Stage Mode. The gain stage being adjusted can be remotely switched via Apollo, so multiple gain levels and their associated colorations can be tuned from the hardware knob for precise physical tactile control, all without using the Unison plug-in's software interface.
Unison Plug-Ins
Note: In all descriptive text, "Unison plug-in" is defined as any Unison-enabled UAD mic preamp plug-in, UAD guitar & bass amp plug-in, or UAD pedal plug-in.
Unison-enabled UAD plug-ins are uniquely coded for Unison integration. Only UAD plugins that are Unison-enabled can be loaded in Console's Unison Insert Location.
For a complete list of all Unison-enabled UAD plug-ins, see "Unison Plug-Ins List" in the appendix at the back of the UAD Plug-Ins Manual.

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Unison

Activating Unison
Unison is activated by inserting any Unison-enabled plug-in into the special Unison insert available on all mic preamp channels. Click the UNISON insert to select a Unisonenabled plug-in from the Insert Assign popover window.
Tip: Unison can be active on more than one preamp channel concurrently.

Unison Insert Location
The Unison insert is located between the preamp gain knob and the standard channel inserts. The text "UNISON +" is overlaid on this insert.
Note: To see the Unison insert, choose OVERVIEW or INPUT from the View Column.

Click this area to insert a Unison
plug-in

Unison Availability
Unison inserts are available on Apollo devices that feature mic preamps. With Apollo Twin, Unison is available on preamp input channels 1 & 2.
Unison Processing
Important: Unison processing in Console's Unison insert is always active on the channel's input signal, regardless of any subsequent channel routing options (DAW I/O, etc). Therefore Unison processing is always recorded in the DAW, even if Console's Insert Effects switches are set to MON.
Unison plug-ins in channel inserts
UAD plug-ins that support Unison can also be loaded and used in any standard inserts available on all Console input channels and/or within a DAW via VST/RTAS/AAX 64 (as with any UAD plug-in). However, there is no physical or electrical hardware interaction with channel inserts, so Unison plug-ins operate like other (non-Unison) UAD plug-ins in this configuration.
Important: Unison features are available only when Unison-enabled UAD plug-ins are loaded within Console in the dedicated Unison inserts.

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Unison

Unique Behavior of Unison Inserts
Console's Unison inserts have some operational differences compared to standard channel inserts, as described below.
Available UAD plug-ins
Only Unison plug-ins are available for selection from the Insert Assign Popover window when inserting UAD plug-ins into the Unison insert (non-Unison plug-ins are not visible in the Insert Assign window).
Note: All available Unison plug-ins are always installed during the normal UAD Powered Plug-Ins software installation process (they are not separately installed).
Linked insert enable and plug-in enable controls
Console's Unison insert enable/disable switch and the Unison plug-in's on/off switch in the plug-in interface are linked. Changing either on/off setting will also change the other setting.
Disabled Unison plug-ins
When a Unison plug-in is unintentionally disabled (for example, when UAD-2 DSP resources are exceeded upon insertion), the red disabled indicator does not appear as it does with non-Unison plug-ins. However, in this situation (unlike standard UAD plug-ins) the following indications do occur:
· The power switch within the Unison plug-in interface is switched off · The Unison insert's enable button is switched off · Apollo's front panel preamp gain level indicator color reverts to green Note: The above functions can be re-enabled after adequate UAD resources are made available.

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Unison

Controlling Unison Plug-Ins with Apollo
When a Unison plug-in is inserted in Console's Unison insert, Apollo Twin's top panel preamp controls and the Unison plug-in's equivalent preamp controls are mirrored. Adjusting Apollo's top panel preamp controls will adjust the Unison plug-in's preamp controls, and vice versa.
Apollo Front Panel Indication
Unison Active
When a Unison plug-in is inserted in a Console Unison insert and Apollo's top panel channel select function is set to the same channel, the color of Apollo's front panel preamp gain level indicator (the LED ring around the knob) is orange instead of green.
Note: Apollo's top panel channel selection indicator must match the Unisonenabled channel to see the front panel Unison indication.
The orange-colored ring indicates that the currently selected preamp channel is using a Unison plug-in within Console, and that Apollo Twin's top panel knob is controlling the first gain stage of the preamp plug-in (with pedal and amplifier plug-ins, the knob is controlling the primary effect parameter, e.g., distortion).

Apollo's front panel preamp knob during normal operation (left) and when a Unison plug-in is in the Unison insert of Apollo's selected channel (right)
Additional Gain Stages
More than one gain parameter within the Unison plug-in can be adjusted using Apollo's front panel knob by activating Gain Stage Mode. When Gain Stage Mode is active, the color of Apollo's gain level indicator, and the target parameter within the Unison plugin's interface, changes depending on which parameter is currently being controlled by the knob, and the parameter being controlled can be navigated remotely by pushing the knob's switch. See Gain Stage Mode for details.
Plug-In Parameters
Unison plug-ins may contain parameters that are unavailable for hardware control via Apollo. For example, the UA 610-B has EQ settings, but there are no EQ controls on Apollo's hardware. To adjust these extra parameters, the Unison plug-in interface must be used.

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Unison

Console Indications
Gain Level Indicator
The color of Console's preamp gain level indicator (the colored ring around the gain knob), and the channel selection dot on the gain knob, is orange instead of green when Unison is active in the channel.
If the Unison plug-in is inactive (either via the insert disable switch or the power switch in the plug-in interface), the color reverts to green.
Note: Console's preamp gain control only adjusts the first gain stage of any Unison preamp plug-in, even when Apollo is in Gain Stage Mode.
Gain Level Display
The preamp gain level display (the gain value readout under the knob) always shows the current value of the main parameter within the Unison plug-in. Additionally, the display is adapted to the parameter value and range of the first gain stage within the plug-in.
For example, when the UA 610-A Tube Preamp plug-in is in the Unison insert, this field displays either "Hi" or "Low" because these are the only two values available in the first gain stage of this plug-in.
Note: This display shows "---" if the Apollo hardware is not detected when a Unison plug-in is in the Unison insert and the insert is not disabled.

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Unison

Front Panel Channel Selection
Level Knob Switch
In addition to the rotary control, Apollo Twin's top panel preamp level knob has a switch function when the knob is pressed. The function of this switch varies depending on the active mode (either Channel Select Mode or Gain Stage Mode), as described below.
Channel Select Mode (standard operation)
Channel selection determines which input channel can being adjusted with Apollo's top panel preamp controls. This is the standard behavior when a channel is not in Unison mode; top panel channel selection is not related to Unison functionality.
Either of these methods can be used for channel selection with Apollo Twin:
· Level Knob After the Preamp switch has been pressed at least once to switch the unit to Input mode, pressing the Level knob alternates the currently selected input channel (CH1 or CH2).
· Preamp Switch After the Preamp switch has been pressed at least once to switch the unit to Input mode, pressing the Preamp switch alternates the currently selected input channel (CH1 or CH2).
An Apollo Twin channel is selected for adjustment when its channel selection indicator LED (CH1 or CH2, above the input meters) is lit. If stereo linking is active, both indicators LEDs (CH1 and CH2) are lit.
Gain Stage Select (Unison operation only)
When the currently selected Apollo channel is in Gain Stage Mode, pushing the level knob changes the Unison plug-in's parameter that is being controlled.
The color of Apollo's top panel preamp gain level indicator (the LED ring around the knob) changes to reflect the gain stage being controlled, and the gain stage is also indicated by the matching color of the indicator dot within the Unison plug-in's interface. For complete details, see Gain Stage Mode.

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Unison

Gain Stage Mode

Unison plug-ins have either two or three gain parameters. By activating Gain Stage Mode, each of these plug-in gain stages can be independently adjusted using Apollo's front panel gain knob.

Note: Gain Stage Mode can only be active on one preamp channel at a time.

Initially, when Unison is activated (before entering Gain Stage Mode), Apollo's gain knob controls the first gain parameter within the Unison plug-in. However, when Gain Stage Mode is active, pressing Apollo's front panel preamp knob cycles through the available gain parameters in the plug-in.

Activating Gain Stage Mode

Apollo Flashing Channel Selection

To enable Apollo's Gain Stage Mode when using a Unison plug-inM:IC/LINE

MIC LINE

CLIP

1. In Console, confirm a Unison plug-in is inserted in the+48VUniPsADon insert of the Apollo

0 -3

preamp channel to be controlled.

+48

PAD

-6 -9

-12

-15

2. On Apollo's front panel, select the preamp channel to Øbe cLoINKntrolledØ (forLINmK ethods,

-18 -21

-27

see Front Panel Channel Selection).

3. Press AND HOLD Apollo's top panel preamp level knob for at least two seconds.

The state of Gain Stage Mode is indicated on Apollo and in the Unison plug-in, as detailed below.

Gain Stage Mode Apollo Panel Indication
Apollo Twin's top panel channel selection number LED (CH1 or CH2) above the input meters flashes when Gain Stage Mode is active, as shown at right.

Apollo Twin Flashing Channel Selection

Gain Stage Mode Unison Plug-In Indication

A colored dot appears within the Unison plug-in interface on the target parameter being controlled, as shown at left.

See Gain Stage Colors for related information.

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Unison

Deactivating Gain Stage Mode
Gain Stage Mode can be deactivated with any of these methods: · Press and hold Apollo Twin's top panel knob for at least two seconds (Apollo Twin must be in Input mode by pressing the Preamp button at least once) · Disable the Unison plug-in via the plug-in editor window within Console · Disable the Unison plug-in via the on/off parameter within the plug-in interface · Remove the Unison plug-in from Console's Unison insert · Change the selected channel by pressing the INPUT switch on Apollo Twin's top panel
When Gain Stage Mode is deactivated, the following changes occur: 1. The gain stage select function (pushing the gain level knob) reverts to the channel select function
2. The channel selection indicator on Apollo's front panel stops flashing
3. If a gain stage other than the first gain stage was being controlled, Apollo's gain level knob reverts to control of the first gain stage of the Unison plug-in, and the level indicator color reverts to orange.
Controlling Individual Gain Stages
Selecting Gain Parameters For Control
When the currently selected Unison plug-in channel is in Gain Stage Mode (when its channel selection indicator is flashing), push Apollo's gain level knob to cycle through the available gain parameters within the Unison plug-in.
Note: Unlike Apollo's front panel knob, Console's preamp gain control only adjusts the first gain stage of any Unison plug-in when Apollo is in Gain Stage Mode. To adjust other gain stages from within Console, use Apollo's gain knob or the Unison plug-in interface.
Gain Stage Colors
The gain stage being controlled is indicated by unique, matching indicator colors on Apollo's front panel and within the Unison plug-in's interface.
The color of the gain level indicator on Apollo's front panel (the LED ring around the knob) changes with each gain stage, and the matching color dot within the Unison plugin's interface moves to the target gain parameter being controlled.
The gain stages available for control, and their associated colors, are:
· Orange Gain stage one; the Gain parameter · Amber Gain stage two; the Level parameter · Green Gain stage three, the clean (non-modeled) output control

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Unison

Matching Gain Stage Indicators In Gain Stage Mode, Apollo's preamp level indicator (the colored ring around the knob) matches the colored dot on the target gain parameter in the Unison plug-in's interface, as shown below. The hardware and software controls are mirrored and the gain stage can be adjusted using either control.
The color of Apollo's preamp gain level indicator changes to reflect the gain stage being controlled
The matching color dot on the parameter in the Unison plug-in interface indicates which gain stage is being controlled by Apollo's front panel preamp knob
Available Gain Stages Unison plug-ins have up to three gain stage parameters. With Unison plug-ins that contain two gain parameters, only the available gain parameters are cycled and controlled in Gain Stage Mode.
Note: For details about the unique gain stage parameters available within individual Unison plug-in titles, refer to the UAD Plug-Ins Manual.

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Unison

Unison Load/Save Behaviors
Caution: Apollo hardware preamp settings (including +48V phantom power) may change when Console sessions are loaded. Details are explained in this section.
Loading Unison Plug-In Settings
When Unison plug-in settings are loaded in Console, the effect upon the currently active Unison plug-in settings varies depending on how the settings are loaded. Its important to understand the distinction, because critical preamp settings can be affected.
Note: When Unison plug-ins are used in Console's standard inserts and/or within a DAW, this section does not apply. Settings load behavior outside of the Unison insert is like all other (non-Unison) UAD plug-ins.
There are two ways Unison (and non-Unison) plug-in settings can be loaded in Console:
· Plug-In Presets UAD Presets are loaded whenever a UAD plug-in is inserted (the default preset loads). Presets can be loaded from disk files via the Presets Manager or the UAD Toolbar. Preset files are used to save & load all settings of individual plug-in titles.
· Console Sessions Console sessions are loaded from disk via the Sessions Manager Popover, the Console Recall plug-in in a DAW, or by double-clicking Console session files on disk. Console sessions are complete Apollo configurations, containing all hardware and plug-in settings (i.e., Console sessions are Console presets).
Loading Presets: Hardware settings are inherited
When a Unison plug-in is assigned to the Unison insert and a preset is loaded into the plug-in, the plug-in inherits the current equivalent hardware settings of the Apollo preamp, if those settings are available in the plug-in.
In simpler terms, Apollo's preamp settings always override a Unison plug-in's settings when a preset is loaded or the plug-in is inserted. This is done to prevent the plug-in's settings from switching the hardware to values that could cause extreme level changes and/or other unwanted circuit changes such as +48V phantom power.
For example, if the PAD is ON in the Apollo preamp, when the Unison preset is loaded, the pad setting in the plug-in is enabled to prevent unexpected level increases.
Loading Sessions: Hardware settings are overridden
When a Console session is loaded (via Console Recall menu, DAW sessions containing the Console Recall plug-in, or double-clicking Console files on disk), ALL Console settings are overridden (changed) by the saved session, INCLUDING ALL APOLLO HARDWARE INPUT SETTINGS.
In simpler terms, Console sessions always override Apollo's preamp settings, even if potentially harmful preamp settings are contained in the session file. This is done because the very concept of Console session recall is to reproduce all settings in the session.

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Unison

For example, if the PAD is OFF in the Apollo preamp, when the Console session is loaded, the pad setting in the plug-in is disabled and sensitive equipment could be affected, such as speakers (level increases) and/or ribbon mics (+48V phantom power).
Unison Operation Notes
The operating notes in this section only apply to Unison functionality (when a Unison plug-in is loaded in Console's Unison insert).
The notes do NOT apply to Unison plug-ins that are used in Console's standard inserts, nor via VST/RTAS/AAX64 within a DAW, even when a Unison plug-in title is used. In this scenario, Unison plug-ins function the same as all standard (non-Unison) UAD plug-in titles and there is no physical or electrical hardware interaction.
Important: Unison functionality is available only when Unison-enabled UAD plug-ins are loaded within Console in the unique Unison inserts.
· When a Console session is loaded (via Console Recall menu, DAW sessions containing the Console Recall plug-in, or double-clicking Console files on disk), ALL Console settings are overridden (changed) by the saved session, including all apollo hardware input settings such as +48V and PAD. See Loading Sessions: Hardware settings are overridden for additional details.
· Unison insert processing is always recorded in the DAW (regardless of the current Channel Insert Effects setting) because Unison plug-ins process the physical inputs.
· A microphone, line input, or Hi-Z instrument source must be attached to the Apollo input channel for Unison plug-in processing in the Unison insert to be audible.
· Apollo's hardware preamp controls remain active even if the Unison plug-in is disabled. · Because Apollo's front panel preamp controls are always current and inherited by the
Unison plug-in, changes made to a Unison plug-in when the plug-in is bypassed are not retained when the plug-in is reactivated. · A Unison plug-in's modeled behaviors and parameter ranges are used by the hardware controls whenever possible, even if the attribute is different than Apollo's stock preamps. For example, if the Unison plug-in has a 15 dB pad, then Apollo's front panel PAD button value will use the Unison plug-in's 15 dB value instead of Apollo's stock 20 dB value. · Default gain levels when a Unison plug-in is inserted can vary from Apollo's default (non-Unison) preamp levels, and also between various Unison plug-in titles. This is a by-product of accurate preamp modeling. Because hardware preamp designs from each manufacturer vary, they all have different total gain amounts, control ranges, and control response curves, whether Mic, Line, or Hi-Z. · If a Unison plug-in does not contain settings that are available on Apollo (pad, low cut filter, etc), the Apollo settings are not changed when the Unison plug-in settings are loaded, and the Apollo settings are still available for control via Apollo's front panel and/ or Console channel.

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· When a Unison plug-in is removed from the Unison insert, Apollo's mic input impedance reverts to its default value of 5.4K Ohms.
(Continued)
· When the original hardware preamp being emulated by the Unison plug-in has a Hi-Z (instrument) input and associated Hi-Z input switch, this switch is unavailable in the Unison plug-in interface. Instead, the Unison plug-in's Hi-Z input is automatically selected when a mono (tip-sleeve) plug is inserted into the Unison channel's front panel Hi-Z input jack.
· If Apollo is disconnected from the host computer (standalone mode), the Unison plugin can no longer be controlled from Apollo's front panel. However, the signal continues to be processed by the Unison plug-in, using the values that were active when the connection was lost. Note that if Gain Stage Mode is active when the host connection is lost, the gain stage can apparently be switched from the front panel. However, the actual gain stage being controlled does not change.
· When the original hardware preamp being emulated by the Unison plug-in has a Hi-Z (instrument) input and associated Hi-Z input switch, this switch is unavailable in the Unison plug-in interface. Instead, the Unison plug-in's Hi-Z input is automatically selected when a mono (tip-sleeve) plug is inserted into the Unison channel's front panel Hi-Z input jack.
· When a channel strip preset is saved from a preamp channel, the channel strip preset contains the state of the preamp channel's Unison insert.
· When a preamp channel strip preset is loaded into a preamp channel, the Unison insert state is replaced by the Unison instance state in the preamp channel strip preset. For example, if the preamp channel strip preset's Unison insert is empty, the Unison insert will be empty after loading the preset.

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Latency & Apollo
Delay Compensation with Apollo
System Latency Overview
System latency encapsulates all latencies induced within the typical digital audio workstation environment. See Latency Basics for a detailed overview of where, when, and how latency is induced in this environment.
Driver Reporting
Any system latency that is induced by Apollo's I/O, Console, and/or UAD Powered PlugIns is reported by Apollo's device drivers to the host audio software that is using the device. The host software uses this reported device latency for its automatic delay compensation (ADC) engine. When properly configured in the DAW, ADC maintains phase coherency (time alignment) throughout the recording, overdubbing, and mixing process.
Automatic Delay Compensation in the DAW
Generally speaking, ADC should be enabled in the DAW when using Apollo, regardless of whether or not Console is used concurrently. The DAW's ADC will perform the necessary housekeeping to keep tracks phase-aligned, regardless of the latency source (if any).
Input Delay Compensation in Console
Console has automatic Input Delay Compensation ("IDC"), which is controlled by the Input Delay Compensation menu in Console Settings. Console IDC maintains phase alignment across all Console's analog and digital inputs when upsampled UAD plug-ins are used in Console. For example: If two microphones are used on an acoustic source (such as a drum kit) and an upsampled plug-in is used on one of the mic channels but not the other, without input delay compensation, the phase of the two mic channels would no longer be aligned.
How Console IDC works
Console IDC automatically adds small amounts of delay to each Console input that is not delayed by upsampled plug-ins, so all Console inputs are still phase aligned. In other words, all compensated inputs are automatically delayed by the same amount.

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Upsampled UAD plug-ins
Some UAD plug-ins are upsampled, meaning their internal sample rate is increased to achieve sonic design goals. When upsampled UAD plug-ins are used in Console, additional latency is induced in the channel(s) using the plug-in(s). Although the latency added by upsampled UAD plug-ins is negligible (typically between 0-300 samples, depending on the plug-in and sample rate), this extra latency can affect phase coherency in a session.
Upsampled Latency Values
For a chart of specific upsampling latency values for UAD plug-ins, see the UAD Plug-Ins Manual.
When To Use Console Input Delay Compensation
Console IDC is required to maintain phase alignment only when BOTH of the following conditions are active:
1. Multiple Console inputs are used for a single source (such as a drum kit using multiple microphones), and
2. Any of those input channels contain upsampled UAD plug-ins.
Tip: When IDC is not needed, disable Console IDC for the lowest possible input latency.

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Effect of Console's IDC setting

In Console
In Console, the amount of delay added by the IDC engine is automatic. Only the minimum amount of delay actually required to compensate the input(s) is applied (up to the maximum value of the setting), maintaining the lowest possible latency for phase alignment at all times.
For example: When the IDC value is Short (100 samples) and only 31 samples is actually required to compensate, then only 31 samples of delay will be applied to the other Console inputs.

In the DAW
In the DAW, the amount of delay added by Console's IDC engine is static. The extra samples are always added to all inputs in the DAW, even if no upsampled plug-ins are active. However, this overall additional input latency is reported by Apollo's drivers, so it is automatically compensated by the DAW's ADC.
For example: When the IDC value is Short (100 samples) and only 31 samples is actually required to compensate, 100 samples is still added to all inputs in the DAW. If using software monitoring via the DAW, the extra (unnecessary) delay could be detected.

Input Delay Compensation Values

Setting Name Extra Delay (samples)

Off

Short

100

Medium

200

Medium-Long

300

Long

1000

Note: By default, Console Input Delay Compensation is enabled with the Medium value (200 samples).

Software monitoring with Console IDC
When software monitoring via the DAW and Console IDC is enabled, the lowest effective Console IDC setting is recommended to minimize monitoring latency. If using Console for monitoring and software monitoring via the DAW is disabled, the IDC value isn't as critical because Console will dynamically deliver the lowest possible monitoring latency.
UAD-2 DSP Resources
Console IDC uses a small percentage of Apollo's UAD-2 DSP. To maximize DSP resource availability for UAD plug-ins, disable Console IDC if it is not needed.
Special Cases: Precision Multiband, Ampex ATR-102, and AKG BX 20
These three UAD plug-ins have extra latency values that exceed the capacity of Console's IDC engine even at the maximum setting (Long). These plug-ins are designed to be used on outputs of a DAW during mixdown, where latency is not a consideration. If using these plug-ins in Console, the Input Delay Compensation feature may need to be disabled or ignored.

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Latency Basics
Latency (delay) is an inherent factor in digital audio systems because of A/D-D/A conversion, I/O buffering in the DAW, plug-in signal processing, and other aspects.
Although there are ways to mitigate latency (such as delay compensation and/or low-latency monitoring), it always exists to some degree when working with systems that combine analog and digital audio. These concepts are explained in greater detail below.
Audio Interface Latency
Every audio interface that performs A/D and/or D/A conversion induces latency as a result of the conversion process. This inherent A/DD/A latency is essentially undetectable. A/DD/A latency usually depends on the sample rate, with higher sample rates inducing less latency (higher rates = less time required for conversion).
An audio interface's "analog I/O round-trip latency" specification refers to how long it takes for an analog signal at an interface input to reappear at the same interface's analog output after both A/D and D/A conversion. Apollo's audio interface analog I/O round-trip latency is 1.1 milliseconds at a sample rate of 96 kHz.
Apollo Mixer Latency
Apollo's DSP mixer (which is controlled by Console) is used for low-latency monitoring (cue mixing) of Apollo's analog and digital inputs. Using Console to monitor Apollo's inputs may or may not add to the inherent analog I/O round-trip latency, depending on how it is configured:
Console without UAD plug-ins When Console is used without UAD plug-ins, monitoring Apollo's inputs via Console does not add any latency. In this configuration, Apollo's analog I/O round-trip latency is still 1.1 milliseconds at 96 kHz.
Console with Realtime UAD Processing When Console is used for Realtime UAD Processing with UAD Powered Plug-Ins that are not upsampled, monitoring Apollo's inputs via Console does not add any latency.
In this configuration, Apollo's analog I/O round-trip latency is still 1.1 milliseconds at 96 kHz, even if up to four UAD (non-upsampled) plug-ins are serially "stacked" (chained) on a single Apollo analog and/or digital input.
All Apollo inputs can have up to four UAD plug-ins each (up to the limit of available DSP resources); this configuration also does not add any latency.
Note: Upsampled UAD plug-ins add latency when used in Console or a DAW. See Upsampled UAD plug-ins below for details.
Console Auxiliary Buses The outputs of the auxiliary buses in Console have 32 samples of additional latency. This is necessary to maintain the lowest possible input latency.

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Upsampled UAD Plug-Ins
Some UAD Powered Plug-Ins are upsampled, meaning their internal sample rate is increased to achieve sonic design goals. Depending on the session sample rate, upsampled UAD plug-ins can add additional latency when used in the Console Mixer and/or a DAW.
Although the latency added by upsampled UAD plug-ins is negligible (typically between 0-300 samples, depending on the plug-in and sample rate), this extra latency can affect phase coherency in a session. However, phase is managed automatically by Input Delay Compensation in Console and Automatic Delay Compensation in the DAW.
Note: For specific upsampling latency values for UAD plug-ins, see the UAD PlugIns Manual.
DAW Latency
Most DAWs use I/O buffering to shuttle audio data back and forth between the audio interface and the DAW. This I/O buffering induces additional latency with any audio interface (not just Apollo).
I/O Buffer Size
The amount of DAW latency is usually determined by the DAW's I/O interface buffer size setting. Low buffer sizes reduce latency, but increase the host computer's CPU loading. If the buffer size is set too low, host CPU overloads and/or audio artifacts such as clicks, distortion, or dropouts can occur.
Monitoring Live Performance During Recording
DAW latency can be a problem during recording when "software monitoring" via the DAW's mixer, because the buffering delay is a distraction; an artist cannot hear their performance in realtime. DAW latency when recording with Apollo is mitigated by using the Console Mixer for live performance monitoring, where buffering latency does not apply.
Time-Alignment Of Newly-Recorded Tracks With Previously-Recorded Tracks
Dealing with latency is also important with DAWs for time-alignment of newly-recorded tracks and previously-recorded tracks which are inevitably shifted from the I/O buffering process.
The solution is to use the automatic delay compensation ("ADC") feature of the DAW. Most modern DAWs, including Console, have automatic delay compensation. For more information about system latency and its compensation, see Delay Compensation with Apollo.

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UAD-2 DSP Latency
When UAD Powered Plug-Ins are used within a DAW (not Console), I/O buffering is used to shuttle audio data back and forth between the UAD-2 inside Apollo and the DAW, which induces additional latency.
This UAD-2 DSP "DAW processing method" latency is determined by the I/O Buffer Size setting. This latency is unrelated to the (indiscernible) audio interface I/O latency (they are separate processes).
UAD-2 DSP latency makes tracking through UAD plug-ins in the DAW via software monitoring problematic for the performer because again, an artist cannot hear their performance in realtime.
The issue of UAD-2 DSP latency when recording with Apollo is eliminated by using the Console Mixer for live performance monitoring with optional Realtime UAD Processing, where buffering latency does not apply.
Does all this latency stuff really matter?
With Apollo, not really. Performance latency is not a factor because of Console's low latency hardware monitoring; and recording (track alignment) latency during recording, overdubbing, and mixing is automatically compensated by Apollo's device drivers and the DAW.

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Device Drivers

Apollo Drivers Overview
The Apollo device drivers are the low-level software files that instruct the computer's operating system on how to communicate with the Apollo hardware. The drivers are loaded during system startup so that whenever Apollo is connected, the device is ready to accept instructions from the OS. Apollo's drivers control Apollo's audio interface, Console, and UAD-2 functionality.
ASIO
Apollo's audio drivers use the ASIO APIs. Apollo's normal (non-DSP) audio interface features are simply seen as an ASIO device; therefore any ASIO-compliant software can use Apollo for audio I/O.
UAD Mixer Engine
The Console program and Console Recall plug-in don't actually communicate directly with Apollo. Instead, they communicate with the UAD Mixer Engine, which is the central software hub for all Console and Console Recall functionality. The UAD Mixer Engine behaves as a server for Apollo's internal DSP mixer that runs in the background, so Console does not have to be open for Apollo to function.
The UAD Mixer Engine is a system-level program that is automatically launched during system startup and is always running during normal operation. The UAD System Menu is its only interface, which can be accessed from its blue "UA Diamond" icon in the Window System Tray at the lower right of the screen.
Driver I/O Complement
The specific inputs and outputs that are available to the DAW depends on the active configuration. The I/O complement changes at high sample rates. Default I/O values are listed in the Driver I/O Tables in this chapter.
Driver Names and Numbers Apollo's drivers describe all I/O channels by name and number, but what is actually displayed in the DAW's I/O assignment lists depends on each particular DAW. Names are not displayed by all DAWs, or the driver name display mode may need to be changed in the DAW.
Virtual I/O Apollo's device drivers carry various virtual (software only) input and output channels in addition to those directly associated with the hardware inputs and outputs. The virtual channels consist of all of Apollo's bus outputs (the main monitor mix and all channel send mixes) and Console's virtual inputs. Virtual I/O facilitates highly flexible signal routing via the DAW. See Virtual I/O for details about this feature.

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Driver I/O Tables
The tables in this section list the I/O numbers and names for all of Apollo Twin's ASIO streams available at default settings.
Tip: Each table is on a single page. For convenient reference with DAWs that don't display driver I/O channels by name, print the sheet for your particular setup.
Available Tables
Apollo Twin's ASIO I/O depends on its Digital Input setting and current sample rate. Click a link below to jump directly to the table for each setting.
S/PDIF Mode 44.1 kHz & 48 kHz S/PDIF Mode 88.2 kHz & 96 kHz ADAT Mode 44.1 kHz & 48 kHz ADAT Mode 88.2 kHz & 96 kHz ADAT Mode 176.4 kHz & 192 kHz
Driver I/O Table Notes
· The number at the left of the column is the channel number used by the DAW. · Channels listed as "(N/A)" are not available in the DAW. · The S/PDIF digital input recognizes sample rates up to 96 kHz.

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S/PDIF Mode 44.1 kHz & 48 kHz

Apollo Twin USB I/O Table Digital Input Mode: S/PDIF Sample Rates: 44.1 kHz & 48 kHz

INPUTS

OUTPUTS

1 MIC/LINE/HI-Z 1 1 MON L

2 MIC/LINE 2

2 MON R

3 MON L*

3 LINE 3

4 MON R*

4 LINE 4

5 VIRTUAL 1*

6 VIRTUAL 2*

7 VIRTUAL 3*

8 VIRTUAL 4*

9 S/PDIF L

9 HP L

10 S/PDIF R

10 HP R

11 ADAT 1 (N/A)

12 ADAT 2 (N/A)

13 ADAT 3 (N/A)

14 ADAT 4 (N/A)

15 ADAT 5 (N/A)

16 ADAT 6 (N/A)

17 ADAT 7 (N/A)

18 ADAT 8 (N/A)

19 AUX1 L*

20 AUX1 R*

21 AUX2 L*

22 AUX2 R*

*Software Outputs (for DAW inputs)

*Software Inputs (for Console inputs)

Note:
· The optical port accepts either S/PDIF or ADAT input. Although ADAT channel numbers and names are always displayed, ADAT inputs are not available in S/PDIF input mode.

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S/PDIF Mode 88.2 kHz & 96 kHz

Apollo Twin USB I/O Table Digital Input Mode: S/PDIF Sample Rates: 88.2 kHz & 96 kHz

INPUTS

OUTPUTS

1 MIC/LINE/HI-Z 1 1 MON L

2 MIC/LINE 2

2 MON R

3 MON L*

3 LINE 3

4 MON R*

4 LINE 4

5 VIRTUAL 1*

6 VIRTUAL 2*

7 VIRTUAL 3*

8 VIRTUAL 4*

9 S/PDIF L

9 HP L

10 S/PDIF R

10 HP R

11 ADAT 1 (N/A)

12 ADAT 2 (N/A)

13 ADAT 3 (N/A)

14 ADAT 4 (N/A)

15 AUX1 L*

16 AUX1 R*

*Software Outputs (for DAW inputs)

*Software Inputs (for Console inputs)

Notes:
· The optical port accepts either S/PDIF or ADAT input. Although ADAT channel numbers and names are always displayed, ADAT inputs are not available in S/PDIF input mode.
· Auxiliary 2 channels are not available for DAW routing via ASIO at sample rates of 88.2 kHz and 96 kHz. However, Auxiliary 2 channels are available within Console at these sample rates.

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ADAT Mode 44.1 kHz & 48 kHz

Apollo Twin USB I/O Table Digital Input Mode: ADAT Sample Rates: 44.1 kHz & 48 kHz

INPUTS

OUTPUTS

1 MIC/LINE/HI-Z 1 1 MON L

2 MIC/LINE 2

2 MON R

3 MON L*

3 LINE 3

4 MON R*

4 LINE 4

5 VIRTUAL 1*

6 VIRTUAL 2*

7 VIRTUAL 3*

8 VIRTUAL 4*

9 S/PDIF L (N/A)

9 HP L

10 S/PDIF R (N/A)

10 HP R

11 ADAT 1

12 ADAT 2

13 ADAT 3

14 ADAT 4

15 ADAT 5

16 ADAT 6

17 ADAT 7

18 ADAT 8

19 AUX1 L*

20 AUX1 R*

21 AUX2 L*

22 AUX2 R*

*Software Outputs (for DAW inputs)

*Software Inputs (for Console inputs)

Note:
· The optical port accepts either ADAT or S/PDIF input. Although S/PDIF channel numbers and names are always displayed, S/PDIF inputs are not available in ADAT input mode.

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ADAT Mode 88.2 kHz & 96 kHz

Apollo Twin USB I/O Table Digital Input Mode: ADAT Sample Rates: 88.2 kHz & 96 kHz

INPUTS

OUTPUTS

1 MIC/LINE/HI-Z 1 1 MON L

2 MIC/LINE 2

2 MON R

3 MON L*

3 LINE 3

4 MON R*

4 LINE 4

5 VIRTUAL 1*

6 VIRTUAL 2*

7 VIRTUAL 3*

8 VIRTUAL 4*

9 S/PDIF L (N/A)

9 HP L

10 S/PDIF R (N/A)

10 HP R

11 ADAT 1

12 ADAT 2

13 ADAT 3

14 ADAT 4

15 AUX1 L*

16 AUX1 R*

*Software Outputs (for DAW inputs)

*Software Inputs (for Console inputs)

Notes:
· The optical port accepts either ADAT or S/PDIF input. Although S/PDIF channel numbers and names are always displayed, S/PDIF inputs are not available in ADAT input mode.
· Auxiliary 2 channels are not available for DAW routing via ASIO at sample rates of 88.2 kHz and 96 kHz. However, Auxiliary 2 channels are available within Console at these sample rates.

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Device Drivers

ADAT Mode 176.4 kHz & 192 kHz

Apollo Twin USB I/O Table Digital Input Mode: ADAT Sample Rates: 176.4 kHz & 192 kHz

INPUTS

OUTPUTS

1 MIC/LINE/HI-Z 1 1 MON L

2 MIC/LINE 2

2 MON R

3 MON L*

3 LINE 3

4 MON R*

4 LINE 4

5 ADAT 1

5 HP L

6 ADAT 2

6 HP R

7 AUX1 L*

8 AUX1 R*

*Software Outputs (for DAW inputs)

*Software Inputs (for Console inputs)

Notes: · Auxiliary 2 channels are not available at 176.4 kHz and 192 kHz. · Virtual channels are not available at 176.4 kHz and 192 kHz.

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Glossary
A/D A n acronym for "Analog to Digital," which refers to the conversion of analog signals to digital data.
AcronymA word formed from the first letters of other words (e.g., GUI, ADAT, TRS, etc.).
ADATAn acronym for "Alesis Digital Audio Tape." ADAT was the name given to the Alesis-branded products of the 1990s which recorded eight tracks of digital audio on a standard S-VHS video cassette. The term now generally refers to the 8-channel optical "Lightpipe" connection that is used in a wide range of digital products from many manufacturers.
AES(sometimes written as "AES/EBU") The name of a digital audio transfer standard jointly developed by the American-based Audio Engineering Society and the European Broadcast Union. Designed to carry two channels of 16-, 20- or, 24-bit digital audio at sampling rates of up to 192kHz, the most common AES physical interconnect utilizes a 3-conductor 110 ohm twisted pair cable, terminating at standard XLR connectors. (See "Dual Wire" and "Single Wire")
AnalogLiterally, an analog is a replica or representation of something. In audio signals, changes in voltage are used to represent changes in acoustic sound pressure. Note that analog audio is a continuous representation, as opposed to the quantized, or discrete "stepped" representation created by digital devices. (See "Digital")
APIAcronym for Application Programming Interface. A software layer between an operating system and third-party hardware (such as an audio interface) and/or software (such as a DAW). For example, a computer OS's audio API enables audio hardware and audio software from different vendors to communicate with the OS and each other.
Apollo Expanded U niversal Audio's name for connecting more than one Apollo device together via Thunderbolt in a multi-unit cascading setup for increased I/O.
ASIOAcronym for Audio Stream Input/Output. ASIO is an audio interface driver protocol for Windows operating systems developed by Steinberg GmbH.
BitA contraction of the words "binary" and "digit," a bit is a number used in a digital system, and it can have only one of two values: 0 or 1. The number of bits in each sample determines the theoretical maximum dynamic range of the audio data, regardless of sample rate being used. Each additional bit adds approximately 6 dB to the dynamic range of the audio. In addition, the use of more bits helps capture quieter signal more accurately. (See "Sample" and "Dynamic range")
Bit Depth(See "Bit Resolution")
Bit ResolutionOften used interchangeably with "bit depth," this is a term used to describe the number of bits used in a digital recording. Apollo converts analog audio and transmits digital audio with a resolution of 24 bits (thus yielding a theoretical dynamic range of approximately 145 dB), the highest audio interface resolution in common use today. (See "Dynamic Range")

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Glossary

BNCA bayonet-type coaxial connector often found on video and digital audio equipment, as well as on test devices like oscilloscopes. In digital audio equipment, BNC connectors are normally used to carry word clock signals between devices. BNC connectors are named for their type (Bayonet), and their inventors, Paul Neil and Carl Concelman. (See "Word Clock")
Buffer, buffers, bufferingThe transference of data in small batches instead of continuously. Buffering induces latency (delay) and is inherent in most digital audio systems.
BusA signal path that carries more than one signal, e.g., a mix bus, auxiliary bus, headphone cue bus, etc.
Channel Input StripA group of controls that pertain only to the functions contained within a particular mixer input channel. In most mixing consoles, the "strips" are duplicated for each input.
Class AOne design technique used in electronic devices such that their active components are drawing current and working throughout the full signal cycle, thus yielding a more linear response. This increased linearity results in fewer harmonics generated, hence lower distortion in the output signal.
Condenser MicrophoneA microphone design that utilizes an electrically charged thin conductive diaphragm stretched close to a metal disk called a backplate. Incoming sound pressure causes the diaphragm to vibrate, in turn causing the capacitance to vary in a like manner, which causes a variance in its output voltage. Condenser microphones tend to have excellent transient response but require an external voltage source, most often in the form of 48 volts of "phantom power."
ClockIn digital audio or video, a clock serves as a timing reference for a system. Every digital device must carry out specified numbers of operations per period of time and at a consistent speed in order for the device to work properly. Digital audio devices such as Apollo normally have an internal clock, and are also capable of locking to external clock routed from other digital devices. In order to avoid signal degradation or undesirable audible artifacts, it is absolutely critical that all digital devices that are interconnected in a system be locked to the same clock.
Clock DistributionRefers to the process of routing a master clock signal (either from an internal clock or an external source) to multiple devices by means of multiple outputs, thus removing the need to cascade the clock through external devices, which can degrade the signal.
D/AAcronym for "Digital to Analog," which refers to the conversion of a digital data to an analog signal.
DAWAcronym for "Digital Audio Workstation" that is, any device that can record, play back, edit, and process digital audio.
dBAbbreviation for "decibel," a logarithmic unit of measure used to determine, among other things, power ratios, voltage gain, and sound pressure levels.
dBmAbbreviation for "decibels as referenced to milliwatt," dissipated in a standard load of 600 ohms. 1 dBm into 600 ohms results in 0.775 volts RMS.

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dBVAbbreviation for "decibels as referenced to voltage," without regard for impedance; thus, one volt equals one dBV.
DIAcronym for "Direct Inject" or "Direct Input," a recording technique whereby the signal from a high-impedance instrument such as electric guitar or bass is routed to an input. DI into mixer or tape recorder inputs often employ use of a "DI box," which raises the signal to the correct voltage level at the right impedance.
DigitalInformation or data that is stored or communicated as a series of bits (binary digits, with values of 0 or 1). Digital audio refers to the representation of varying sound pressure levels by means of a series of numbers. (See "Analog" and "Bit")
DitherMinute amounts of shaped noise added intentionally to a digital recording in order to reduce a form of distortion known as "quantization noise" and aid in low level sound resolution.
DryRefers to a signal that is unprocessed, e.g., recording a dry signal. The antonym of a "wet" signal.
DSPAcronym for "Digital Signal Processing" (or "Digital Signal Processor.")
DSP AcceleratorA device dedicated to digital signal processing. UAD-2 devices are DSP accelerators.
Dynamic MicrophoneA type of microphone that generates signal with the use of a very thin, light diaphragm which moves in response to sound pressure. That motion in turn causes a voice coil which is suspended in a magnetic field to move, generating a small electric current. Dynamic mics are generally less expensive than condenser or ribbon mics and do not require external power to operate.
Dynamic RangeThe difference between the loudest sections of a piece of music and the softest ones. The dynamic range of human hearing (that is, the difference between the very softest passages we can discern and the very loudest ones we can tolerate) is considered to be approximately 120 dB. (See "Bit resolution")
EQAbbreviation for "Equalization," a circuit that allows selected frequency areas in an audio signal to be attenuated or boosted.
External ClockA clock signal derived from an external source. (See "Clock")
FETAcronym for "Field Effect Transistor." A type of transistor that relies on an electric field to control the shape, and hence the conductivity, of a "channel" in a semiconductor material.
FirmwareSoftware that is embedded in hardware.
FPGAAcronym for "Field Programmable Gate Array." A type of integrated circuit that can be programmed after manufacturing ("in the field") to perform specialized functions.
Front EndRefers to a device that provides analog and digital input/output (I/O) to a digital audio workstation (DAW). Apollo is a front end.
Graphical User InterfaceA software window, panel, or screen containing controls where parameters are adjusted by the user. (See "GUI")
GUIAcronym for Graphical User Interface.

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Hi-ZAbbreviation for "High Impedance." Apollo's Hi-Z input allows direct connection of an instrument such as electric guitar or bass via a standard unbalanced ¼" jack.
High ResolutionIn digital audio, refers to 24-bit signals at sampling rates of 88.2 kHz or higher.
HzAbbreviation for "Hertz," a unit of measurement describing a single analog audio cycle (or digital sample) per second.
ImpedanceA description of a circuit's resistance to a signal, as measured in ohms, thousands of ohms (Kilohms), or millions of ohms (megohms).
Internal ClockA clock signal derived from onboard circuitry. (See "Clock")
I/OAcronym for "input/output."
kHzAbbreviation for "kiloHertz" (a thousand Hertz), a unit of measurement describing a thousand analog audio cycles (or digital samples) per second. (See "Hz")
JFETAcronym for Junction Field Effect Transistor, a specific type of FET which has some similarities to traditional bipolar transistor designs that can make it more appropriate for use in some audio circuit designs. (See "FET")
JitterRefers to short-term variations in the edges of a clock signal, caused by a bad source clock, inferior cabling or improper cable termination, and/or signal-induced noise. A jittery signal will contain spurious tones at random, inharmonic frequencies. Usually, the jitter will be worse with higher signal frequencies. The internal digital clock of Apollo was designed for extreme stability and jitter-free operation, and its onboard phase aligned clock conditioner circuitry removes jitter from external sources, so conversion quality is uneffected by clock source.
LightpipeA digital connection made with optical cable. This was a phrase coined by Alesis to make a distinction between the proprietary 8-channel optical network used in their ADAT products and standard stereo optical connectors used on CD players and other consumer products.
Line LevelRefers to the voltages used by audio devices such as mixers, signal processors, tape recorders, and DAWs. Professional audio systems typically utilize line level signals of +4 dBm (which translates to 1.23 volts), while consumer and semiprofessional audio equipment typically utilize line level signals of -10 dBV (which translates to 0.316 volts).
Low Cut FilterAn equalizer circuit that cuts signal below a particular frequency. Same as "high pass filter."
Mic LevelRefers to the very low level signal output from microphones, typically around 2 millivolts (2 thousandths of a volt).
Mic PreampThe output level of microphones is very low and therefore requires specially designed mic preamplifiers to raise (amplify) their level to that needed by a mixing console, tape recorder, or digital audio workstation (DAW).
Mute"Turn off the signal." Mute stops the signal from being routed.

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NativeRefers to computer-based digital audio recording software controlled by the computer's onboard processor, as opposed to software that requires external hardware to run.
OSAcronym for Operating System. The OS is the software used to control the computer hardware, such as OS X (Mac) and Windows (PC).
PanAbbreviation for "Panorama" or "Panoramic." A pan control determines a monophonic signal's positioning in the stereo field.
Patch BayA passive, central routing station for audio signals. In most recording studios, the line-level inputs and outputs of all devices are connected to a patch bay, making it an easy matter to re-route signal with the use of patch cords.
Patch CordA short audio cable with connectors on each end, typically used to interconnect components wired to a patch bay.
PDFAcronym for "Portable Document Format." PDF is the standardized file format used for distribution of documentation in electronic form. Various applications can open PDF files; one such "reader" application is available for free at www.adobe.com.
Plug-InSoftware components that are added to host software applications to enhance their functionality and/or performance.
Powered Plug-InsHigh-quality audio processing plug-ins, developed and sold by Universal Audio, that run exclusively on UAD DSP accelerator products.
Quantization NoiseA form of digital distortion caused by mathematical rounding-off errors in the analog to digital conversion process. Quantization noise can be reduced dramatically by dithering the digital signal. (See "Dither")
Realtime UAD ProcessingUniversal Audio's DSP + FPGA technology that enables UAD Powered Plug-Ins to run with latencies in the sub-2ms range. Realtime UAD processing provides the ultimate sonic experience while monitoring and/or tracking. Realtime UAD processing is a special function that is available only within the Console application.
Ribbon MicrophoneA type of microphone that works by loosely suspending a small element (usually a corrugated strip of metal) in a strong magnetic field. This "ribbon" is moved by the motion of air molecules and in doing so it cuts across the magnetic lines of flux, causing an electrical signal to be generated. Ribbon microphones tend to be delicate and somewhat expensive, but often have very flat frequency response.
SampleA digital "snapshot" of the amplitude of a sound at a single instant in time. The number of samples taken per second is determined by the device's sample rate. (See "Sample rate")
Sample RateThe number of samples per second. In digital audio, there are six commonly used sample rates: 44.1 kHz (used by audio CDs), 48 kHz, 88.2 kHz (2 x 44.1 kHz), 96 kHz (2 x 48 kHz, used by DVDs), 176.4 kHz (4 x 44.1 kHz), and 192 kHz (4 x 48 kHz). The higher the sample rate, the greater the frequency response of the resulting signal; however, higher sample rates require more storage space. (See "kHz")
Sample Rate ConversionThe process of altering a digital signal's sample rate to a different sample rate.

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S/MUX(sometimes written as "S-MUX") Abbreviation for Sample Multiplexing. S/MUX is a method for transmitting two channels of high sample rate (88.2, 96, 176.4, or 192 kHz) 24-bit digital audio over a legacy optical "lightpipe" ADAT connection, which was originally designed to carry eight channels of 16-, 20- or 24-bit audio at 44.1 kHz or 48 kHz sampling rate. (See "ADAT" and "Lightpipe")
SPDIF(sometimes written as "S/PDIF") An acronym for "Sony/Philips Digital Interface Format," a digital audio transfer standard largely based on the AES/EBU standard. Designed to carry two channels of 16-, 20- or, 24-bit digital audio at sampling rates of up to 192 kHz, the most common SPDIF physical interconnect utilizes unbalanced, 75 ohm video-type coaxial cables terminating at phono (RCA-type) connectors. (See "AES")
SuperclockA proprietary format used by some early Pro Tools systems to distribute clock signal running at 256x the system's sample rate, thus matching the internal timing resolution of the software. (See "Clock" and "Pro Tools")
TranscodingConverting one type of digital signal to another (i.e, from AES to SPDIF, or from ADAT to AES).
TransformerAn electronic component consisting of two or more coils of wire wound on a common core of magnetically permeable material. Audio transformers operate on audible signal and are designed to step voltages up and down and to send signal between microphones and line-level devices such as mixing consoles, recorders, and DAWs.
TransientA relatively high volume pitchless sound impulse of extremely brief duration, such as a pop. Consonants in singing and speech, and the attacks of musical instruments (particularly percussive instruments), are examples of transients.
Transimpedance PreamplifierA transformerless solid-state preamplifier utilizing a transistor configuration that employs current feedback for ultra-low distortion and the highest possible quality of signal from input to output. The transimpedance design allows audio from 4 Hz to 150 kHz to pass through without altering the phase relationships between fundamental frequencies and overtones. Noise and distortion are kept to neartheoretical minimums so critical signals may be generously amplified without degrading the quality or character of the sound source.
TRSAcronym for Tip-Ring-Sleeve. A ¼" phone connector with three conductors, typically used for balanced signal connections (e.g., I/O) or carrying two unbalanced signals (e.g., headphones).
TSAcronym for Tip-Sleeve. A ¼" phone connector with two conductors, typically used for unbalanced signal connections. Note that TS, like TRS and XLR, denotes the connector only and does not necessarily indicate the signal level of the connection. TS/ TRS/XLR cables are used for both low-level (e.g., microphones and instruments) and line-level connections.
UADAcronym for "Universal Audio Digital." Used in reference to digital products created by Universal Audio.
UAD-2A line of DSP accelerator products developed and manufactured by Universal Audio.

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UnisonUniversal Audio's exclusive preamp hardware/software integration technology that enables UAD preamp, pedal, and amplifier plug-ins reconfigure the physical input impedance, gain staging response, and other parameters of Apollo's mic preamp hardware to match the emulated preamp's hardware design characteristics, along with bi-direction control.
Virtual I/OApollo audio inputs and outputs that exist in software but not in hardware. Virtual I/O is used to route digital audio channels between Console and other audio applications. Compare to Flex Routing.
WetRefers to a signal that is processed, e.g., recording a wet signal. The antonym of a "dry" signal.
Word ClockA dedicated clock signal based on the transmitting device's sample rate or the speed with which sample words are sent over a digital connection. (See "Clock")
XLRA standard three-pin connector used by many audio devices, with pin 1 typically connected to the shield of the cabling, thus providing ground. Pins 2 and 3 are used to carry audio signal, normally in a balanced (out of phase) configuration.

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Notices
Disclaimer
The information contained in this manual is subject to change without notice. Universal Audio, Inc. makes no warranties of any kind with regard to this manual, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Universal Audio, Inc. shall not be liable for errors contained herein or direct, indirect, special, incidental, or consequential damages in connection with the furnishing, performance, or use of this material.
End User License Agreement
Your rights to the Software are governed by the accompanying End User License Agreement, a copy of which can be found at: www.uaudio.com/eula
Trademarks
Universal Audio, the Universal Audio "diamond" logo, Apollo, Apollo Twin, Arrow, UAD, UAD Powered Plug-Ins, UAD-2 Live Rack, Powered Plug-Ins, Unison technology, 1176, 1176LN, LA-2A, LA-3A, OX, OX Amp Top Box, Century Tube Channel Strip, DreamVerb, EQP-1A, Helios, Oxide, Teletronix, and "Analog Ears | Digital Minds," are among the trademarks, trade names, and service marks owned by UA, many of which are registered in the United States and in other countries. This is not a comprehensive list of all UA trademarks. All other trademarks depicted herein are property of their respective owners.
Copyright
Copyright ©2019 Universal Audio, Inc. All rights reserved. This manual and any associated software, artwork, product designs, and design concepts are subject to copyright protection. No part of this document may be reproduced, in any form, without prior written permission of Universal Audio, Inc.

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Technical Support
Universal Audio Knowledge Base
The UA Knowledge Base is your complete online technical resource for configuring, operating, troubleshooting, and repairing all UA products. You can watch helpful support videos, search the Knowledge Base for answers, get updated technical information that may not be available elsewhere, and more.
UA Knowledge Base
YouTube Support Channel
The Universal Audio Support Channel at youtube.com includes helpful support videos for setting up and using UA products.
UA YouTube Support Channel
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The unofficial UA discussion forums are a valuable resource for all Universal Audio product users. This website is independently owned and operated.
www.uadforum.com
Contact Universal Audio Support
To contact the UA support team for technical or repair assistance, please visit:
help.uaudio.com

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