So, both guitarists in my band now have early 80s, Canadian built JCM800s of the 2203, 100-watt variety. One guitarist has had his for years (and paid almost nothing for it at the time), and has put in a tube-buffered effects loop, and uses the pre-amp from a Fender combo amp into the effects return for cleans. The other guitarist just picked his up recently and it's completely stock (and in really good condition), but clearly needs a clean channel of some sort.
Is there any way to mod these amps to use both the low-gain and high-gain channels with some sort of footswitch? I know an A/B box won't work to switch between them. Does anyone do that sort of mod?
I checked Voodoo amps and they don't do anything like that, just tone-improvement mods, and effects loops.
The other big time modder is FJA mods. Check into them.