Well mdrew tested the RX-V661 amps with his M80s, they approached 100db I think before they shut down...I am more interested in the upper range amps (from the new 3800) and see how they perform with M80s.
I think that solidifies my thoughts on M80s versus M60s and my Pio 94. If I could only get 100db and it shut down, I would not be happy I think. Do I normally push it that hard? No. But then again the other day when everyone was out and I was working in another room, I had it up. Came back in and measured. 103db. Then again, I do have hearing deficiencies.