I recently bought the XPA-2 and XPA-5 to run my 7.2 HT setup, Onkyo 805 and Yamaha 663 (I have three Radio Shack A/B switches to select between the Onkyo and Yamaha) as the pre/pro. The XPA-2 runs two M80s , no bridging. The XPA-5 powers 2 M22s and VP100 wired parallel for centers, and four QS8 for side and back surrounds. SVS PB-12 and Axiom EP125 for subs. I use the XPA-2 when listening to music in stereo mode. I think the Onkyo sounds a tad better than the Yamaha, but not by a lot of difference, just the Onkyo sounds more "natural" thru the XPAs. I listen in moderate levels, nothing over -10dbs on the volumn knob on both receivers. No problems with shutting down, love the XPAs!! If anyone can give suggestions on improving my set up, let me know :).

M80s,2 M22s & VP100,4 QS8, SVS PB-12 Axiom EP125, Emotiva XPA-2 & XPA-5,Onkyo 805, Yamaha 663