My local Cary dealer is also a ProAc dealer. I heard the 805Bs powering 3.8s with the Cary pre and it was MAGIC - on jazz and chamber it sounded like the musicians were in the room. The speakers totally disappeared. The audition room was a bit live, high ceilings/hardwood floors and the ProAcs were pulled well out into the room, but the sound was not "tubey"...I don't remember which CDplayer was being used, I think it was the 303. Since this wasn't my audition, I didn't hang around too long, but for the 20 minutes I heard it...I would have to say YES, Cary and ProAc mate very well indeed. You would probably be upgrading the speakers long before the amps.