RPi4 with Pi-DigiAmp+,
installed HifiBerryOS 64 alpha 1 with success and become updated by the system.
RPi5 soon to be equipped with AMP4 Beta,
installed HifiBerryOS 64 alpha 6 with success.
Both connected to a NAS and my music is recognize.
Next step is testing against speakers and try to find boxes to these two setup.