Been playing my '83 2204 plugged into the low sensitivity jack, master dimed, pre-amp about noon, with a fresh set of KT77's and couldn't be more pleased. Absolutely spot on tone, good bottom end, solid mids and sweet high's.
But the hi sensitivity jack is totally out of hand. Its at 3/4 volume even with the master at 2, and it's much too bright for my liking, even with the eq treble rolled back. Is this a typical characteristic of the JCM 800? It's quite the difference between the 2 jacks, with quite a bit less bottom end and mids in the High sensitivity. I'm still quite new to this amp and trying to get a feel for it.