Slightly OT but I think Chevelle is one of the most under-rated bands out there.
Great tunes and even better guitar sounds.
Mesa peeps - does this sound more like a MkIIC+ or a Mk IV ?
I saw Chevelle live, last year, and spent some time after the set looking at some of his amp setting from in front of the stage, so I kinda had an idea as to what he was doing to get his overall basic heavy tone when I started.
So, concerning tube amps... Having only minor in store experience with real Mark IV's and V, and that one time I borrowed a friends Mk II combo for a bit, I'd actually say that in my experience, the MkIIC++ Axe-FX model has gotten me closer to Chevelle's tone than any tube amp I've ever played. BUT I've had lots of time to mess with the Mk IIC++ model. On top of that, I was able to try lots of cabs till I found the perfect one, which personally, I've found is usually where that final bit of tone is hiding when I'm trying to get a certain tone.
As for the Mk IV Axe model. I think you could get it there, with a bit of advanced tab work, but the MkIIC++ seems to get there easier from default/reset. I didn't mess with anything advanced outside of setting crunch to 20%, just cause I like a tiny bit more grunge. I didn't even messed with the "built in" (Mark) EQ, it's set flat.
Also, while I got pretty spot on with a few different songs, (in Drop D, so it was "as close as I could" without going the full monty) the tone I decided on for my songs is more just "in the flavor", and not really an exact clone. Plus, he's never really been very consistent, even from song to song on a single album. He kinda just has a flavor, as it is.