I think in general the lower end Emotivas have been pretty problem free. As I recall, it's been the MPA-1 (obviously) and the XPA-2 that have been problematic with the M80s. The UPA-5, XPA-3 (maybe the XPA-5?) and LPA-1 have been ok.

I could be utterly wrong, but I think that's where we stand now.

I don't know anyone crazy enough to own the XPA-1. Which is a really cool amp, since it has warning stickers that say it will kill you if you touch the binding posts while it's turned on.

I am the Doctor, and THIS... is my SPOON!