Please note that Alan has mentioned on past threads that many Onkyo's will shut down when driving the 4ohm 80's. This may not be true for the newest models. You may want to confirm with the mfg.

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