I’m looking for help in identifying which parameters in the amp block will most directly contribute to tweaking a given amp model to having more punch, openness, rawness, ripping attack, less compression, etc. while not killing all of the saturation and making an amp too dry/sterile.
I'm trying for a few of the same qualities, mostly it's openness and less compression. Try these settings.
On some amps the master volume can sound like a towel thrown over the speaker, maybe for leads that's good but for open rhythm I like 4 to 6. The cut is on, this clears things up to. Also choose right, or left, for input select.
For the preamp, even though the input boost switch is off, choosing a boost type still
has an effect, for what you want try "Grinder". Note the Tube Hardness is off, this is tricky
in that it can eat into the flesh of a note too much, you can make it up at the Power Tube stage.
The Tonestack is another big deal, try a Brit Silver or Hot Kitty for example, these are bright
hi gain amps. The dialing in between of the tonestack frequency makes a huge difference, mess about
between 450hz and 700hz. Try the 12axa7a RCA for a Preamp Tube type.
Note the Supply Sag is at O, this gives an immediate attack, the B time is fully open.
This is one of the most important sections I have found, note there's no speaker drive, no compression,
no compliance or speaker thump. For speaker thump I move the Low Freq between 100 to 250 hz, at a
resonance of 2 to 5, then adjust the Q accordingly. For a harder rhythm attack, choose medium for your
speaker breakup. I like Soft because there's more 'note' and less attack. I like the 1x8 Champlifier also,
it's a tighter attack overall. For that raw rhythm sound try playing with the Cab Resonance, like at least 100%.
These settings should be pretty close for you. For aggression in the highs, try turning the
Grid Bias up to 80%. Note everything is off in the Cathode Follower Section.
Good Luck.