I'm looking for an audio interface that can send a clean stereo output over USB with the final mix. I saw a youtube video showing that the AR12c can do that using the "USB send 1/2" button. I need this for live streaming so using software to mix the audio on the computer is introducing delay and complications. I don't really need 12 channels, so can any of the other PreSonus devices do this same function and send the final mix as one channel that a program like Skype could understand? Thanks!!!