Using DS4's controller DAC as an audio output over USB possible?

[webodan]

Hello,

I've been wondering if it was possible to get RetroPie to output sound through the DS4's audio output (over USB). I know for a fact that this is possible under Linux on x86_64 (worked fine for me using pulseaudio) but I didn't want to screw up my current setup by installing other sound systems while not having proper backups first. I've tried fiddling around with the audio output menu under emulationstation, but neither the"PCM", "Master" or "Speaker" options for audio output worked. However, alsamixer DID show up the DS4's dac as a sound card.

Could anyone help me make it work on retropie if possible?

Thanks in advance.

Edit: I've managed to get a wav file playing on the ds4's dac using retropie, but trying to edit the /etc/asound.rc file failed to get emulationstation to output audio to it. So yeah all I'm in need for is directions to get ES to output to it.

[mitu]

@webodan I don't think ES reads the list of Audio cards present in the system - the choices you see now are the default choices.
Try using the instruction from the USB Audio FAQ page.