Re: Dissident Aggressor
I was literally just playing that song last night.
I'd disagree with the idea of turning down tone, though that would depend on rig. For me, "Dissident Aggressor" is a foreshadowing of the tight-and-bright '80s Priest tones.
To my ears, the "Dissident Aggressor" tone is simply that of a Marshall that's been tightened with overdrive. I've been getting in the ballpark with a PRS SE Santana with Gibson 57 pickups, and the EHX Soul Food (Klone overdrive) in front of a Keeley 1962 (Marshall Bluesbreaker variant), with all controls on both pedals literally at noon. If anything, I may want to dial out some low end to tighten the sound even further, but I'm pretty happy with my homemade version of the tone.
I'm not sure what gear KK and Glenn were using at that point.
That tone also has a bit of right hand technique to it - make sure the palm mutes are crisp and precise.