Well I just ran some 4ohm speakers on mine from 5:30 tell about 9ish. It was powering 3 JTR Noesis 212's and 4 ED's cinema 6's. No one was harmed, no fire broke out, and it sounded FANTASTIC!
I have a local AVS friend that wanted to hear what XT32 would sound like in his room with 8 18" subs and the Noesis. Lets just say we were both very impressed. He's been working on his sub EQ with a mini-dsp for some time now. Audy got it right without any fuss at all. We used an Omnimic to check its work then used a bunch of clips we have be seeing a lot of lately to see how it compared. This was a great learning experience for both of us.