I recently purchased a sunn 200B amp, I believe it to be a 1966 - 67 by the descriptions I have seen on this site (the numbers are on the control panel, not on the knobs, the knobs have silver centers), also the SUNN logo is not like any I've seen before, it is silver and looks like script writing with what looks like a small red sun in front of the S and another after the N, the usual radiating sunn logo is stenciled in black on the control panel as is the 200B in red,. The controls are laid out the same as a 200S with three knobs and two boost switches, one black and one red. I can't find any mention of a sunn 200B model on any site! Could this be a limited production or prototype of the 200S? Any info you can give me would be greatly appreciated! I can send you a photo of the amp if it would help or if you would be interested.
Thanks!!!!!!!!!!!!!!!