Quote Originally Posted by WESTLOWER View Post
I have been asked if the Amp will take any 300b Valves?...

YES it will, it can also be adjusted to give more output with other 300b valves that require this.
Also, the 2 knobs on the top of the amp are Humbuckers and one simply adjusts for zero Hum, once set thats it for a long time.

It's also Auto Biasing, so no need to get your meter out or anything technical. Simple!