pass labs vs. plinius

anyone compare the pass labs class a amps to the plinius class a amps?
what about pass labs ab amps to plinius ab amps?
not able to listen to them and would like to get a handle on their sound.
would be paired with usher dancer mini 2 with Be tweeter, belles 21a preamp with auricap upgrade, and virtue audio piano m1 cdp.