In the quest for a tone that I'm happy with I thought I'd try a few things. The main part of my tone was that it sounded a bit to trebly despite adjusting the treble on the amp.
Generally, I'm using amp sims to get a guitar tone I'm happy with for recording, mainly the JCM 900 boosted with the TS in Amplitube 2 into Boogex. For the leads I've been using a bit of Wagner Mk2.
So I thought, how is it I'm so happy with the Marshall tone in Amplitube 2 but not with my own amp?
I did a comparison by sending the FX loop of the DSL into my Firepod and recording some stuff and sending it to the same impulse I use in Boogex and it sounded pretty much the same!
So then I decided to send the sounds from Amplitube 2 with the cab part bypassed into my FX return on my DSL. It sounded much better and the trebly frequency that was bugging was pretty much gone. Although Amplitube 2 does model the power section too, (which you can't bypass) so I tried the ACM 900 preamp in Revalver MkII to try and get a pure preamp signal and that gave me an awesome metal Marshall tone.
I also tried Wagner Mk2 into it and that sounded great also, plus some of the Mesa's and Peavey pre-amps. Tones galore!
One funny thing that did happen though, when I was setting it up I forgot to adjust the fader in my DAW and...
AAAAAAAAARGH I'm sure the walls of my house were shaking at the volume!
Not only that, I'd somehow routed DFHS to my amp and that was blasting through my cab too!
I've done a comparison and I can get rid of the harsh treble I keep mentioning by cutting at 800hz on my EQ pedal, it's by no means perect but an Ok work around while I try out some other amps etc