usb-dac
There are 3 repositories under usb-dac topic.
nuclearfurnace/smartstand
The SmartStand: a headphone stand w/ built-in USB DAC/amplifier that can switch between outputs automatically.
sa9ra1xken/hw_xSSDAC
KicadProject for a digital audio device that features XMOS xCORE embeded processor. The board behave as a USB audio class output device (USB DAC), or an audio media player (Micro SD card player)
Connor-Devitt/USB_Speaker
Electro-mechanical design for a USB spaker