I've had the M80's hooked-up to my DENON 2802 for a week, and they sound GREAT! Both on 2 channel(175 watts @ 4 ohms)and 5.1 surround. Their definetly AXIOMS best for "room filling" and overall dynamics, have yet to experience any overheating or clipping.

There are several posts addressing your query although you'll need to search for them, including favorable remarks from Ian (pres.& chief engineer)on DENON receivers.
Good Luck.