I am woefully ignorant of the technical details of how much power is required to drive the 90-95 db sound level or how hard a receiver must work to drive the M80's. Most of the posts I read in here state that receivers like the Denon 3800 or 2800 series or the Yamaha 1800 and up. I just bought the Yamaha RX V663 AVR as a means to pick up HDMI for a future Blue Ray and to pick up the latest Dolby capability. The 663 is rated at 95 wpc for 5.1 - I know that this type question gets asked ad nauseum - but would the 663 drive the M80's?..........Rob
