User Manual
Route Mac System Sound to Different Outputs 
1.
Open the Audio/MIDI Setup Utility, found in the Applications > Utilities folder of your Mac
!  
2.
In the Audio Devices window, [Control+click] on 
Apogee Symphony Thunderbolt. 
3.
In the Menu that appears, select “Configure 
Speakers”. 
4.
If playing a stereo audio file, select the Stereo tab. If 
playing a multi-channel audio file, select the 
Multichannel tab. 
5.
Select the desired Symphony output channel for 
each speaker assignment. For example, if you want 
iTunes to play out of Symphony channels 3 & 4, set 
Left Front to “3” and Right Front to “4”. 
6.
Select the Apply button.!
SYMPHONY I/O MK II - USER’S GUIDE Page 14










