Check out this review. The reviewer powers M80’s with an Onkyo 601, only 85 watts per channel, he seemed to think it did just fine. I have been using and Onkyo sr700 to power my M50’s, Qs8’s (6ohm) and VP150 (6ohm) w/out any problem. I’m sure the 801 will be fine. I can't figure out how to add those fancy links that you see all over this board so you'll just have to copy and paste this: http://www.audioholics.com/productreviews/avhardware/onkyo_TX-SR601_review_01.html