If you haven't tried the 805 with m80's, I would not assume you will have a problem. As long as your not pushing the 805 to limits that it protects itself, it should work fine.

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