Unfortunately, I cannot anymore: I don't have a working Hub on hands. In fact, I have one, but it is bricked since a year or so (I've been refunded by Buchardt for this, BTW).@VintageFlanker do you have possibility to check SE speakers if there is any difference in sound while playing on cable and on WISA?
Back in the days, I tried regular A500s wired and wireless many times and heard no difference whatsoever while running the same MTs.
As I suggested, I'm pretty sure your WISA configuration was either wrong (both channels mixed) or faulty (maybe something with your Primare).On my side the speakers using WISA are unusable and I'm trying to figure out if this is fault of the speakers or Primare SC15.