Moto G and Moto X already have native USB Audio support, it's been verified here. That's the frustrating thing, they are so close to pure Google and yet pure Google doesn't/won't provide the native support. Kondik figured it out, Google's own company Motorola figured it out, so why not Google? SMH
Haven't followed the whole thread so sorry if it's been answered, but if that's the case, why does a device like the AQ Dragonfly not work natively with the Moto X? I'm assuming it has something to do with the DAC itself because several other DACs work perfectly fine with the Moto X. I've tested the Headamp Pico and the Apogee Mini-DAC, both work perfectly with the X.