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I read the documentation again and cs42448_1.inputLevel(0.8); dampens the input sensitivity so that my cd player no longer overloads the input. I then connected the odd inputs to the odd outputs in addition to the even ones, so that the full 24 bits are transferred from the cs42448...

update: I connected my old Denon DCD-820 CD player to the board but it clipped. So I put my old Edirol M-10DX mixer in the chain as an attenuator and routed the signal to the board output and usb audio at the same time. (Test CD was https://www.youtube.com/watch?v=4Gxevlfk7fg :-) ) The result...

Hello alfa66, thanks for the video, very good! I made 2 measurements with an external sawtooth (1038Hz) first a passthrough and input and output measured with the Rigol: yellow is input, cyan is output. And saw those slight vibrations again. The board was connected to a power bank in the...

as I am brand new here let me say thank you to you all for the great forum and especially to Paul for the great Teensy! Attached a screenshot of the Waveforms16.ino example, it doesn't look as good as a sawtooth might look; maybe R/C on the board are not optimal.

thanks alfa66, great job!!! Got my board running, but had to add 2 pull-up resistors (2.2K) to the i2c bus. Cheers, Trurl