I just installed a fresh AMP100 on a brand new RPI4 and experience a small crackle / distortion sound when you start new songs. Sounds like there's a bit crap data in the data buffer or something. Very annoying..
Roon, SpotifyConnect, AirPlay, all show the same behaviour, so it doesn't seem source-related.
Have multiple AMP2's which work flawlessly so very dissapointed with this.
Hifiberry support, is there any advice?