What tube amp to drive Guarneri's?

I remembered the KR enterprises amp model: It's a KR-"Kronzilla" using of course a 1610 tube (not 1611).

It's a SE with ~25W/ channel. They also have monos (~40W/channel SE) which the Guarneri owner ultimately ended up with.

Since you asked -- albeit in a different context -- the room here was big (~600 / 60m2)

Davey,
I had the set up in two different rooms. They actually worked better in the larger room which was 21' x 15.5'. I don't listen at obscene levels, but never clipped the amps. 20 watts of Apollo SET is probably like 80 watts of SS, and I'm sure having output transformers help in driving the speakers. I found the Guarneri did not like my smaller room, so I sold them and bought Avantgardes which actually worked a bit better in the smallish room. They are gone now too.

Chris, how large was your smaller room?
I suspect probably all speakers work better in a larger room than a smaller room. Mine is 10x11 with a 15' vault ceiling. I sit in the near field( no other choice). Sounds good, but I am sure a larger room would be much better.
Here in S.Calif, the room size is by far the most expensive component you are going to buy. Makes all other equipment choices in comparison seem like chicken feed in cost.

My room is 19'x11' with 8' ceiling. I think the Guarneri are the rare small speaker that sings in large spaces. They seem to thrive on having open space around them. They won't play deep bass, but they do mate well with REL subwoofers like the STRATA III.

Chris, your 19x11 room would seem to be more problematical in its ratio of size than your 21x15.5 room. Did you have the speakers on the long wall or firing down the long wall in the samll room?
I would suspect that maybe the smaller room would be an issue with most speakers due to its ratio.