Well, I know the MixAmp can be connected via USB:
http://www.astrogaming.com/manuals/MixAmp_quickstart_2.pdf
But after looking at the DSS page, I'm not sure if its USB only serves as power:
http://www.turtlebeach.com/products/audio-processors/ear-force-dss.aspx (click on "How does it work?")
http://www.astrogaming.com/manuals/MixAmp_quickstart_2.pdf
But after looking at the DSS page, I'm not sure if its USB only serves as power:
http://www.turtlebeach.com/products/audio-processors/ear-force-dss.aspx (click on "How does it work?")