Come to think of it, the only hum I ever had that I can remember was from a Bryston and that was a ground loop hum which was easily corrected. Parasound, Odyssey, Anthem, Marantz, NAD, ROTEL etc etc etc have all been hum free in my house................but I'm the guy who spent more on the wiring, fuses, box etc etc in my house then most people do. In spite of what some think, I'm a true believer with respect to the power coming in does make a difference on what comes out.