Nice write up!

When are you going to spring for a new pre-amp?

FYI, Over on Emotiva's site there are many running the XPA series, including the XPA1 and 2, with M80s and are having no problems.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70