So here’s the deal: I have a Mesa Fillmore 25 head that I run through a 23” Fillmore Cab, and a Widebody closed-back cab with Alnico Cream (possibly the BEST speaker I’ve ever heard). I love the clean channel, and it takes pedals really well. I like it better than the ‘76 Deluxe Reverb, and the ‘68 cpr I use to own. My issue is with the Drive and Hi channels. They sound so compressed and nasal compared to the clean channel, and they don’t clean up with the volume knob at all. I’ve read through the manual (several times), tried every eq setting I can manage, but I can’t it to open up, or “crunch”. I’m not sure if those are the right words to describe tone, but they’re the best I got. I like a “crunchy” rhythm sound (Marshall-ish?), as I’m not much of a lead player. Would the 6L6 tubes of the Fillmore 50 be more “open” and “crunchy” and less compressed and “vocal” than the 6v6’s in the 25? Am I missing something? I play mostly classic rock, indie, P&W, and blues.