I'd like to suggest JCM 800 2205 or 4210 (smaller chassis than the head version and no presence control) based on the last version of the circuit (model year 1988-1990). In the last version Marshall resolved the issues with channel bleed by changing the switching mechanism and also they are known for having a bit more gain on the boosted channel.

I think this would be a excellent compliment to your existing offerings of JCM 800 style clones. There are some that turn their nose up at anything other than the original 2203/2204 's however the later model 2205/2210's are also well regarded many especially those looking for a bit more versatility than the single channel models.

If you chose the smaller chassis model (4210) I imagine you could trade out the Reverb control for a Presence control. And of course having external bias test points and trim pot(s) would be a huge improvement over any stock JCM 800.

Hi Nik, my thinking was that it is a fantastic sounding amp that hasn't been produced in 20 years and that you could take the design and turn it into something unique to Ceriatone such as doubling the power output, seperating the Crunch/Gain Pre/post controls, adding bias adjustment pots, etc. I think if you did something like that and word got out someone was building an higher powered Bravo you could then sell it at a price that would make sense for you.

To answer your question, it is all tube. The preamp (3x12AX7) and power tubes(2xEL84) are mounted horizontally in what Peavey called PAG (Parallel Axis Grid) format. Because the tubes are hidden horizontally behind a metal plate and the fact Peavey didn't put a standby switch on it a lot of people assume the amp is solid state but it is definitely not.

If you do a Internet search, Peavey forums, etc, you will see these amps are very well regarded.

Cheers!

How about a Peavey Bravo clone in head format with double the power output, 40 instead of 20 watts? Also would be  nice to have ultra gain channel have its own dedicated Pre/Post knobs instead of pull knobs on the crunch channel.

I know on the surface it may seem ridiculous to suggest cloning a low dollar 80's amp but these are actually  fantastic sounding and prized by many folks. Their biggest downfall is they have just 2 EL84's and only put out  about 15-20 realistic watts so it is somewhat difficult to gig with them effectively. I also think they get  dismissed/overlooked because they happen to be decked out in the butt ugly late 80's Peavey teal and silver color  scheme and come in equally ugly rubberized tolex wedge style cabinet but that in turn helps keep the resale prices  low on them. I do recall however the Bravo winning "best stack in a box" from one of the guitar magazines in the  early 90's.

If anyone is interested here is a pretty good representation of what they sound like although they are much more impressive in person driving a 2x12 or 4x12 cab.