I had the M80's on the 3805 alone for around six months. I sounded really good except at insanely high volumes, when the sound started getting distorted.
With the Sunfire (I will be testing a C272 over the weekend), they sound much better at all volume levels. The overall volume level of the setup went up too (Maybe the 3805 being freed of the 4 Ohm load and having more power for everything else).
Again, the setup sounded very sweet with the 3805 alone, it was the best I have heard at the time. It just sounds better with dedicated power to the M80's.
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M80, VP150, QS8 Surr, QS8 Back Surr
Sunfire Amp -M80, Denon 3805 -all else, SVS 20-39 PC+
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