I just upcycled two CX100 with the Beocreate 4 channel amplifier. After the initial setup I tried out HiFiBerryOS and RoPieee to run them as an endpoint to Roon. Both work, but with RoPieee I only get half the maximum volume of HiFiBerryOS. Without this issue I would have preferred RoPieee, because I runs fine in other projects.
The configuration was done according to this article. What can be wrong or is it a known error?
Apart from that I am very satisfied with the setup. The sound is great and it was fun to give the classical speakers a new shine!