I am trying to use the Audio MIDI Setup program to aggregate two USB Sennheiser PC8 stereo headsets so I can use both simultaneously on Skype calls and GarageBand recordings. So far I am only able to use one at a time by deselecting the other USB device under the newly created aggregate device. How can I get both two work at the same time!?
- Mac OS X Yosemite 10.10.2
- 13in Macbook Air Mid-2012
- Sennheiser USB PC8 Headsets (http://en-de.sennheiser.com/usb-pc-headset-stereo-pc-8-usb)