MT, I have the Yamaha HTR-5660 (Equiv to the RXV640) that I got for a steal on e-bay. It is definitly 2 to 3 models down from the 1400. I'm driving a pair of M80's with no problems, and it sounds great. It does run a little warm, but not as hot as my old Luxman integrated did.
In your bio, I see you have an H/K 630. Why the switch? IMO, the H/K would have a more robust power supply & amplifier section. If I had the dough, I would have sprung for the H/K. Plus that glowing blue volume knob is ultra cool.
