I have the Onkyo 805 and it does ok for the M80's which I have. This unit does run hot and there's even a sticker on the top of the unit that says it will run hot. Its never shut down because of heat. The issue for me is that at louder db's the unit distorts a bit and the solution was to get a seperate amp and to use the 805 as a pre-pro. I hooked up a Parasound a51 and now I just smile alot when at louder levels. Hope this helps