Those are my favorite Emotive amps. Ever. I had to buy what my funds would let me buy, sadly. I needed 4 of them for my system, so I had to get the UPA-1's. ALSO really nice amplifiers, but they'd never compare to an XPA-1. Those are the Gen1's aren't they?
@David Draper not sure about the generation class they fall under.
It was not long after I received the amps from Emotiva they were soon discontinued. So I would guess they would be the last of the models generation.
They are magnificent sounding monoblocks...listening to them at this moment...tubes before solid-state makes beautiful music.
Happy New Year to you