I have heard these amps.
I hope to get to hear them with my Snell Es. I am afraid it is going to be really good.I am afraid because I am unemployed and there is no way I can think about a 12k amp.
Meanwhile, I got to hear these on a relatively high efficiency speaker in a very revealing system,after listening with some very nice 300B Sets,making about 10 watts.When the De Havillands were turned on I/we were bowled over.The sound leaped forward what seemed like several feet. The music was so much more exciting,forward and lively. Slightly edgy,solid foundation bass with the feeling that it could give more and more.
Yet through all the fireworks they had a really sweet and articulate midrange,innerdetailed with delineated voices/players like a 300B amp.This is after all, a SET.It just happens to make 40watts!
I am really afraid these are going to sound magical on the Snells.