Hello,
the hifiberryOS download 04042023 will not run on my RPi3B+ (V1.3, 2015).
Therefore I am using the version from 28022022 with the following workaround:
nano /etc/hifiberry/config.fixed
CARD="Beocreate 4-Channel Amplifier"
DSPTYPE="Beocreate 4-Channel Amplifier"
FEATURES="dsp toslink"
This works fine with our DIY Open Baffle speaker:
Best regards,
Michael