This project is a work in progress based on the Raspberry pi zero 2. It uses the Pirate Audio headphobe DAC hat and the pi sugar 3. I think it is probably compatible with wireless headphones as well but this remains to be tested. It currently runs on the Volumio OS but I have a few problems with the way it works with the hat out of the box, so it may be worth looking into how to rewrite some of the code. I also still need to print a casing for it so it isn't just circuit boards held together by standoffs.