I just sent in my 950 for repair of a buzzing problem that is puzzling me. I first thought it was a ground loop problem, but it made the buzz without any cables plugged in and on any outlet (even at a neighbors). Another sign was that the 7100 (or any of the other components) in my system does not buzz. Now I'm thinking it is a transformer problem, and am wondering how common this is. Well, does anybody else hear their 950 from 6 ft away during quiet passages?