I Have the Onkyo TX-SR800 (last years flavor) and run M80s, VP150, QS8s, M22s & PB1-ISD. This setup has been up and running for about a year now and has had no problems carrying the low impedance M80s. Actually, unless there is a Dolby Digital signal present, I run the TX-SR800 in ALL CHANNEL SURROUND all of the time which is a pretty heavy load. I too had the same fears before I purchased the M80s, but not to worry - the TX-NR801 is a neat rcvr. and sounds great with the Axioms.