Sound Devices USBPre 2 - Manual (Page 9)

USBPre 2 User Guide and Technical Information
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Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
Mac OS Installation and Connection
Before connecting the USBPre 2, quit all open applications that use audio. An application that is
running when the USBPre 2 is connected may not recognize the USBPre 2 until the application is
restarted.
When connecting the USBPre 2 to a computer with OS X 10.5 or earlier installed, hold down the
Input 1 Source Select button while pluggin in the USBPre 2. This will cause the USBPre 2 to initialize
in USB Fullspeed mode, which is required for OS X 10.5 and earlier.
Screen shots show Mac OS 10.6
OS X Audio / MIDI Setup
Follow 1. Applications> Utilities> Audio MIDI Setup to open the Audio MIDI Setup dialog.
OS X 10.6 and later: Highlight the USBPre 2 item, click the button with the gear icon and select 2. Use this
device for sound output . Click the button with the gear icon again and select Use this device for sound
input .
OS X 10.5 and earlier: Ensure that the USBPre 2 is selected for both the Default Input dropdown menu
and the Default Output dropdown menu in the System Settings section.
Adjusting Sample Rate in OS X
Follow 1. Applications> Utilities> Audio MIDI Setup to open the Audio MIDI Setup dialog.