Hi Ron, I have a pair of BAT Rex II mono's and have the new Vitus SS-103 amplifier coming in a week. You are welcome to listen to them here or at your place - I am not that far away.
Ken Boyce - Cake Audio
Very old thread, I know, but I'm curious if you ever did this comparison, or if others have an opinion on the BAT Rex II or III? It's difficult to find reviews of these. I've always been interested in 6C33C amps. I briefly had a pair of Supratek monoblock amps that used 6C33C tubes, and they were amazing, until one died. I bought a box of 50 spare 6C33C tubes 20 years ago, anticipating getting a new 6C33C amp, but have not done it yet.
After having problems with various tube amps, I decided to simplify with solid state a few years ago, but the idea of a 6C33C amp keeps nagging at me.
I would use them with either YG Hailey 2.2 or SF Electa Amator III speakers. I don't think the Lamm amps would have enough power, so I've been considering BAT.
These would be my winter amps, so heat would not be a concern.