Best 300B SET

"Looking for 300B SET (one output tube per channel)"

Do you mean one output tube per channel as in you don't want PP, or do you mean an SET with 2 output tubes, or both?

Not sure what your speakers are but you might look at Sophia Electra, they have a couple of versions of a stereo version as well as mono blocks, and a company called Japanese Triode has a nice set of mono blocks, the TRX-M300 .

Go beyond the obvious….

WAVAC, Mastersound, VIVA, Line magnetic all make wonderful 300b amplifiers of extreme quality.

Johnk is correct.

Johnk/Sounds-real....if you've heard the LM mono 300B amps, I would LOVE to hear your impressions...

I run an AirTight ATM300 8W SET (WE300B newer production, Genalex GL B749 drop ins for 12AU7s, RCA red label, grey plate 12BH7s & 1940s JAN RCA black plate 5U4G) and am saving for the LM 755i's...