In my tests, the MPS-1 would not shut down when cranking up my Qs8's (6ohm) to the same level as the 80's (4ohm). Emotiva also blammed the Axiom 80's as being the problem. However, others with Rocket 4ohm floorstanders and bookshelfs had the same problem. Back then I think the amp was not able to drive 4ohm speakers, even though the Axiom's don't fall below 4ohm.

Not sure about this new design.

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