My QSC SRA 3622 amplifier arrived a few days ago. My front M80s are now enjoying 1100 watts per channel at 4ohms! This is a major power upgrade from the Denon 3805's rated 120 wpc. I can now listen to music at ear splitting levels without any clipping or distortion. I am very happy with the QSC amp. Compared to the Denon, there is a distinct improvement in bass, even at low volume levels. At all levels, the sound is crisp and clear. In the past, at high volume levels, certain sounds would become 'muddy'. Not any more!
The QSC amp is quiet and powerful. The amp's fans are silent. There is no hum, no audible sound in the system. It has RCA inputs, unlike the other pro amps that have XLR or 1/4 inch inputs. I was able to use my existing cables.
I am now seriously looking at getting two more amps for my center and surround speakers. I don't need 1100 watts for those channels. I think I will settle for a 300-600 watt amp! :-)
