Yup, which kind of makes me think that it may not be a defect, but if fact, they know it will just not handle the amount of power I'm demanding for the M80's at 90 to 110 db in the listening area at times. ;-) Will see if I'm corect of what I hear back, " Sorry Dennis, we coul dfind nothing defective on the 770, as I was trying to tell you, there is something in your system casuing the problem" any bets, if I'm wrong, I will provide the beer and food for a BBQ. <g>