I was wondering if someone could give me the Four-Oh (is that the right lingo?) on the 4100, or 4202, or whatever the hell else numbers the JCMs come with.
How does a JCM 800 have various other combinations of 4 other digits behind it, and how does that make it different? Same goes for JCM900...2000...
And then we have DSL and TSL to add to that. How does it all work!? Someone please de-confuse me here.

Yeh sorry i am an amp noob. But i'm sure one or two other people have been wondering, but have not asked for fearing of looking the idiot, WELL I FEAR YE NOT! The fool i will be...

