Lonnie had me try bi-amping my m80's using the extra monoblock amplifiers in my MPS-1, I think I got maybe a few extra dB's before it shut down as well. Some others have not had issues with some of the other Emotiva amps, but I'm not sure if they tried driving them to the same levels.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85