Have you put any thought into a budget receiver that has pre-outs and then adding a 2 channel amp for the M80's. A receiver alone might not be the answer to supply "plenty of power" to your listening environment. It is probably one reason you fried your Denon to begin with. How big is your room?

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne