Ok, I have to add my experience so far with the MPS1. Last night I played the following CD's in full length cranked loud and I mean really friggin loud in my HT which is about 2800 cu.ft.

Dire Straits "Brothers in arms" / huge dynamic peaks
Keb Mo " Simple Things" /massive bass
Poncho Sanchez "15 of his best" again, dynamics that just scream.
UB40 "Homegrown" DVD Concert..woot!,,,,mega, mega , mega bass
Nora Jones (as much as I could handle:) )

Unit got warm, but no where near hot, fans running full steam ahead though. Sound was excellent with zero distortion except for my ventilation rattling. Not one shutdown. I did not use an SPL meter as it doesn't matter what the dial says, my ears said thats friggin loud and I like it loud.

Of course I can make it shut down if I just turn it up till the volume is at insane levels that I would NEVER listen to.

Chris

Emotiva DMC1, MPS-1 ,M80v2 ,Klipsch RC64,Mirage Omni260 surrounds,Paradigm PW2200 sub