Volume control mixer: disabled
Playing Spotify from iPad Mini using airplay. Airplay volume is at its maximum.
Especially in the track “Creep” by deadmau5 I noticed annoying distortions when the piano starts to play after ~ 20 seconds. (open.spotify.com/album/3ScgavCVe7BOTrLWbKDTDN)
Listening to the same track using an analog audio cable i couldn’t hear any distortions. So I lowered the airplay volume on the iPad and the distortions were gone.
So my first conclusion was that this is an airplay fault.
Next I tried to play this song directly on the PI (flac - CD rip). And … tada distortions are back.
So maybe a HDMI fault by my Onkyo AVR?
To eliminate this possibility I played the song on max volume from my PC over HDMI - no distortions at all.
So is this a hardware fault of the raspberry or a decoding bug of volumio?