I sold them -the Parasound A21+ amps were just too big/heavy to move around at my age. I still have an A23+ in the bedroom system, but my office now has a Schiit Wotan, the main system has Schiit Tyr mono blocks. While the Tyr/Wotan are hefty at 55 lbs, their height is about 1/2 that of the big 73lb A21+ and that makes maneuvering them much easier.