Originally Posted by tninety
Yes. It works perfectly with my desktop PC running Linux as the gateway, so I'm testing my software on a smaller device (starting with Raspberry Pi) soon.
An update - though my solution works perfectly from Android 4.2 16/44.1 output -> x86 PC running Ubuntu -> Dragonfly DAC (worked also with my Xonar STX as output device), there was no luck replacing the PC with a Raspberry Pi with Raspbian - I'm having USB bandwidth issues with the async AQ Dragonfly, apparently, even after some fixes, I never got it to actually play any sound.
I'm going to try my ODROID-X soon (on which the USB bus is much more robust compared to the RPi) and I have an ODROID-U2 on order (since it's basically a much more portable version of same board; though it's a lot more expensive/power hungry than the RPi than I would be comfortable, I'm pretty confident it won't have the same issues).
I also considered the Beaglebone Black + a small two port hub, but apparently that also has USB bandwidth issues so I didn't want to drop the $40+ for it. The ODROID-U2 seems to be the smallest semi-cheap hackable board that runs a full Linux distro.
Hopefully I can eventually get this working. Using Android's native USB audio dock output would be pretty amazing, since there would no futzing with USB audio drivers/apps and compatibility with DACs would be near 100%.
Edited by tninety - 6/23/13 at 2:23am