Installation guide
HDX Card Installation Guide32
Configuring the Apple Sound 
Preferences or Apple Audio 
MIDI Setup
(Required for Using Avid Audio Interfaces with 
Apple iTunes or QuickTime Player)
To use your Avid audio interface with certain 
Core Audio–compatible playback applications 
(such as Apple iTunes or QuickTime Player), 
you will need to configure either Sound Prefer-
ences or Audio MIDI Setup in addition to Avid 
Core Audio Manager. However, for most Core 
Audio–compatible client applications (such as 
BIAS Peak or Ableton Live) this is unnecessary 
since you can configure the Core Audio Buffer 
Size setting and audio input and output chan-
nels from within the client application.
Apple Sound Preferences
To configure the Apple Sound Preferences:
1 Launch System Preferences (Apple menu > 
System Preferences).
2 Click Sound.
3 Click Output and select HDX as the device for 
sound output.
4 Click Input and select HDX as the device for 
sound input.
5 Quit System Preferences.
Sound Preferences, Output settings
Sound Preferences, Input settings (Pro Tools HD 
shown)










