What tube amp to drive Guarneri's?

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.

Yes, the smaller room is a bit of a problem, although, I've successfully used Avantgardes in the same room. The bigger room in my other home sounded great regardless of what was in play. I think a clock radio would have sounded good in that room! I am using a single driver speaker now based on the Phy-Hp driver. It is utterly amazing and the room is not a bit of a problem Oh' I fired the Guarneri down the long wall. They were about 5' from the front wall and I was about 10' from them.

Hi

I recommend the David Berning ZH-270 OTL

This is one of the amplifiers SF use to voice their speakers. I have the Guarneri Berning combo and it really has a very nice synergy

FF