GM Arts, I know what you mean about the JCM800 being more fuzzy on top. I'm trying to duplicate an old recording I made 20+ years ago with a 200W version Marshall head in the JCM family. I realize it's a different beast even though it's in the same family, but I don't know what other model to try. Anyway, that old Marshall had this mid-range "ting" that I can't duplicate for the life of me. I think probably because the 200W power section didn't distort at all. Not until ear shattering levels anyway (and speaker blowing, ehem. Hey, I was young.) The JCM800 model is definitely more "soft fuzz" than my recording. Maybe that's how the real JCM800 sounds. Probably so. I did end up with a patch I like, even though it doesn't sound like the recording I was after. I ended up raising the dynamics and the transformer match, which softened the high end so leads feel more liquid.
I hope all this ranting helps you in some way.
I hope all this ranting helps you in some way.