Topic: Raspberry Pi 4 via USB and ADI-2 DAC
My results (using Roon/Ropieee) so far are good. No glitches, no crackles, no problems playing, up to DSD256 DoP. Sound is good in my non-audiophile ears and setup. As good as the Squeezebox and Sonore microRendu (which I sold). There doesn't seem to be a difference between my Raspi 3 + Digiberry via coax. I grouped both devices in Roon, and multiple blind tests proved for me there wasn't. First test I thought so (or I just guessed right) but the two other tests showed a random result. Oh, and I also added a screen, so I can see the album cover, and it's almost like having a Squeezebox.
Only one odd thing so far (and I'm not sure whether this is a Raspberry or ADI2 related problem): when the DAC has just started up the first sound I hear when I start playing is a click. Everything I play afterwards is fine. When I turn off the DAC and try again to test it, the click sometimes occurs, and sometimes doesn't. I always hear the click in the morning (when it's been turned off all night). The Raspi is always on. The Raspi 3 + Digiberry via coax didn't click, so it might be USB related?
I'm not expecting RME to find a solution for devices they don't sell, but I'm looking for clues here. I have daily contact with the Ropieee developer, and we're trying to find the culprit. Any suggestions what I could try or check?