Thanks, Dr Joe.
I was thinking about the 180 because a friend of mine, a spectral devotee, had said there was some warmth there. I'm pretty much hooked on spectral, I think the 100 should be interesting, and I hadn't really thought about it before.
When I auditioned preamps, I did the 12, the 20 and the 15. They were all fantastic, but it just got better going up to the 15. Amazing steps forward in the newer designs, and I would expect something similar in their power amps. I know spectral didnt want to put something new out there unless it represented an advancement.
I'll keep my eyes peeled for the 100. One thing is they have these different versions, or series, and I don't know the trade offs.