Sound Devices USBPre 2 User manual

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USBPre 2
Portable High-Resolution Audio Interface
User Guide

Sound Devices, LLC
E7556 Road 23 and 33
Reedsburg, Wisconsin USA
Direct: [phone]
Toll Free: [phone]
Fax: [phone]
www.sounddevices.com
[email protected]
Legal Notices
Copyright © 2016 Sound Devices, LLC.
All rights reserved.
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Manual Conventions
USBPre 2 User Guide • Rev 1-A• August 8,2016

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Revision History
Rev# Date Firmware
Version
Description
1-A August 2016
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Table of Contents
USBPre 2 Audio Interface
Front Panel..................................... . 7
Back Panel . . ............... . ................. . . . 8
Left Panel...................................... . 9
Right Panel..................................... . 9
Computer Setup ............................... . 10
System Requirements......................... . 10
Setting up Mac OS X ....................... . . . 10
Setting up Windows OS....................... . 12
Installing theASIO Driver .................... . . 16
Uninstalling the ASIO Driver............... . . . . . 19
Updating USBPre 2 Firmware . . . . . . ... . . . . . . . . . . 21
DIP SwitchOptions . . . . . . ....................... . 22
Inputs . . . . . . ................................. . . 23
Input2 LoopSource. . . . . . . . ................ . . . 25
Outputs . . . . . . . . ............................ . . . 25
Adjusting Headphone Monitoring. . . . . . . . . . . . . . . 25
Meters . . . . . . ................................. . 26
Stand-alone Mode . . . . . . ....................... . 27
Sample Rate. . . . . . ............................ . . 27
Diagrams and Examples
Setup Examples ................................ . 29
Test andMeasurement ....................... . 29
High-Performance Playback . . . . . . ... . . . . . . . . . . . 30
Block Diagram. . . . . . .......................... . . 31
Specications
Powering . . ............................ . . . . . . . . 32
Inputs . ....................................... . 32
Outputs . . ............... . .................... . 33
Recorder. . . . . . . . ............................ . . . 33
Physical. . . . . . ................................. . 34

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Topics in this section include:
Front Panel
Instructions for quick setup is provided
in the USBPre 2 Quick Start Guide,
shipped with the product and offered
as a free PDF download from the Sound
Devices website.
Input Gain Controls Monitor Mix Control
Phantom Power LED
Output Gain ControlMetering LEDs Limiter LEDs Low-Cut LED 15 dB Pad LED Headphone Volume Control
HP Mono Button & LED
Input 1 Split LED Input Source LEDs
Input Source Button
Meter Source Button
FEATURE DESCRIPTION
Front Panel
Back Panel
Left Panel
Right Panel
Computer Setup
System Requirements
Setting up Mac OS X
Setting up Windows OS
Installing the ASIO Driver
Uninstalling the ASIO Driver
Updating USBPre 2 Firmware
DIP Switch Options
Inputs
Outputs
Meters
Stand-alone Mode
Sample Rate
USBPre 2 Audio Interface

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FEATURE DESCRIPTION
S/PDIF digital inputs cannot be monitored in the headphones. S/PDIF
signal can only be monitored after being processed by the computer.
instead of output.
output levels instead of headphone gain.
Back Panel
XLR Outputs
DIP Switches
S/PDIF I/O
FEATURE DESCRIPTION

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USBPRE 2 AUDIO INTERFACE
Left Panel
Line Inputs
Mic Inputs (XLR) AUX Inputs (1,2)
FEATURE DESCRIPTION
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Right Panel
Aux Outputs
Headphone
Outputs
S/PDIF Input & Output
USB Port
FEATURE DESCRIPTION
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FEATURE DESCRIPTION
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Computer Setup
System Requirements
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FEATURE DESCRIPTION
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For Notebook Computer users: For proper operation of the USBPre 2, turn off all
power management when using the USBPre 2 for audio recording. Power manage-
ment reduces processor speed, system bus speed, spins down hard disks, shuts
down displays, or a combination of the above to reduce current consumption and
extend battery run time. The change in state from active to power-saving mode
can disrupt data on the USB bus and cause unintended dropouts.
Sound Devices cannot guarantee that a given computer can be used satisfactorily
with the USBPre 2 based exclusively on the fact that it meets the above require-
ments.
Setting up Mac OS X

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USBPRE 2 AUDIO INTERFACE
To set audio defaults and sample rate in OS X:
USBPre 2 is selected for both the Default Input and Default Output drop-down
menus.

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channel count, and bit depth.
Setting up Windows OS
To set audio defaults and sample rate in Windows 7 & Vista:

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USBPRE 2 AUDIO INTERFACE
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To set audio defaults in Windows XP:
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USBPRE 2 AUDIO INTERFACE

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Installing the ASIO Driver
based computer, it should be uninstalled prior to installing a newer version. The

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USBPRE 2 AUDIO INTERFACE
latest version of driver serves as a driver for both 64-bit and 32-bit systems. For
uninstall instructions, see .
To install the ASIO driver:
and down-

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USBPRE 2 AUDIO INTERFACE
Uninstalling the ASIO Driver
To uninstall the ASIO driver:
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