I think I mentioned this on the developer call at one point, but I think it fell through the cracks in the recent PipeWire/Wireplumber updates.  The issue is the ramp on the master volume mixer is too shallow, the volume is still very low at a setting of 50%, and output is inaudible at like 25-30% unless there's a lot more amplification on the output side than we used to need to use.  I believe gkiagia indicated this should not be hard to tweak in the PW configuration.