So I was bored and started looking at 300B amps, and came across this:

http://jacmusic.com/Yamamoto/html/Amps/A09/description.htm

Does this pass the non-shitty 300B amp test?

I've never heard one myself but Yamamoto have a good reputation. It doesn't have 6SN7s so it's not just your typical generic 300B amp, from what I can see of they have actually tried to make something that sounds good. I'd love a listen but I doubt one will end up in my part of the world.

Yeah those Yamamotos get really good reviews.

In case anyone's interested, it's about $4K w/ tubes.