View Full Version : How: Output audio to 2 different ports simultaneously?

Feb 23, 2008, 05:18 AM
Hope I am just missing something really simple.

I want to have simultaneous output from the USB port and Digital Optical to go to 2 different DACs but the new 'Aggregate Device' won't out put to both.

been reading about combining inputs but combining outputs or sending iTunes to 2 different ports is not clear to me, I even tried, heard soundflower was needed......

I tried 2 variations in the aggregate editor:
1) Built in AUDIO + USB DAC
2) Sound Flower (2ch) + USB DAC
and chose these aggregates as the Default Output in the Audio MIDI Setup but...

I only get output to either Optical or USB, but not both simultaneously. What am I missing?

And what is Soundflower outputing exactly? how is it different than Built in Audio?

I also just installed Apple AU Lab and don't get that either.

Thanks, dakhed

System: G5 Dual 2.3g PPC, OS 10.4.11

Feb 23, 2008, 05:21 AM
This thread about soundsticks and linout (analog) seems the same but the solution is not clear.

Joerick said he got it but it is sorta vague on the settings.


Feb 25, 2008, 10:12 AM
No replies. I guess this is not really EASY to do?