It's revoiced. More aggression and gain. A little tighter bottom end to my ears. Imaging something like a maxon OD808 in the front, to slightly push it and tighten up the bottom. Revoiced upper mids.
Don't misunderstand me. It isn't anthing built in like a maxon circuit, the revoicing just sounds wise feels and reacts like it. It's still a full tube circuit. Just was fishing for words to describe.