I've decided to take stakes a little higher and prepared bigger version of previous prototype. New one used Texas Instruments TAS5805M DAC, which is a big upgrade actually

- It have high power stage, producing up to 23W per each of 2 channels (yeah!)

- obviously it requires more than 5V over USB, so i had to redesign power circuitry completely.

- it requires I2C additional to I2S to communicate and few GPIOs to report it's status.

Because power stage took a lot of PCB space, screen went other side of the board for now. On the bright side, i could take a larger screen, since i have plenty of space now.

So all together it is quite a different beast and I'm trying to find time to write firmware to get it started even. I get Ka-Radio32 firmware working on both prototypes and it works brilliantly on PCM5102 version. Currently working on TAS5805M addon to jump start the big thing.