Summary: So I dislike giving bad reviews. I guess I am a nice guy, kinda, but anyway I have to leave one for this model. First off, from the mouth of multiple Onkyo Level 3 techs, this unit only does 7.1. Period. You can run speakers in parallel and do some other things to get it to play 9.1, but that burns the unit out, according to Onkyo. So, after that, I got a M-5010 to support the other two speakers, ya! Right? Bah.