I’m using Ropieee XL’s Spotify Connect service with a Hifiberry Amp 2. When using Hardware Volume Control the Volume Control is not working right. When I set the lowest volume possible in the Spotify app the Hifiberry amp still runs on an estimated 30% to 40% percents of its power. Increasing the volume a tiny little bit (to 20% in Spotify) corresponds to an estimated 80% of amp power. When I change the Spotify Connect settings in Ropieee XL to software volume control everything works as expected and low volumes are low.
I’m experiencing the exact same issue with an Allo Digione hat. So this does not seem to be a Hifiberry issue.
I’m running the the latest stable release of Ropieee XL.
Interestingly on Airplay and also Squeezelite the hardware volume control works as expected.
