I recently bought this DAC from Bournendboy and have been waiting for the Allophonics case to arrive. But being impatient I decided to put it in my kitchen system anyway . HAve to say I have only used DAC Digi Hats in the past on Raspberry Pi units (JustBoom , HifiBerry) and using Max2play these have worked well in various other sytems with stand alone DAC's in them .
As the Khadas just plugs straight in to the USB on a Pi and then a very quick setup on Max2play to change the Audioplayer card (drop down menu option to Khadas) and it takes the power from this connection as well this does offer a very small and cheap option as a streaming front end.
Before buying this on spec I did not know too much about the Khadas well all I can sya is that it sounds wonderful very detailed , neutral and to musical . Instuments and especially acoustic ones have a real timbre and decay in their notes with the pesence of the soundbody on a guitar being easy to identify. I am shocked at just how good this sounds , when the case arrives I will be swopping it out in other systems I have and seeing how it performs with a wider range of equipment .