I ran the M80s with a lowly Denon 1804 and had no problems what so ever, I now have the venerable 3808 which just plays a touch cleaner when I go LOUD.

While I was waiting for the M80s to arrive I listened extensively to the M60s and after I forgot how the M22s/M80s sounded the M60s were really working for me. I wish I had kept them \:\) I prefer the look of the M60 with the exposed frontal area compared to the full grill look of the M80.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70