Inputs: USB, Bluetooth, 3.5mm analog
Output: 3.5mm analog
RP2040
DAC for USB audio:
- https://www.ti.com/product/TAD5242
Bluetooth Audio Chip with integrated DAC - https://www.tinysineaudio.com/products/tsa6012-bluetooth-audio-receiver-board
analog stereo switcher: - 2x TS5A3359 for left/right channel
Oder doch https://www.hs-sound.de/TinySine-TSA7800B ?