The Vibroverb was on Waiting for the Punchline, you can really tell it.
The first disc was a JMP Master Volume.
Pornograffitti was an ADA MP-1 through an old MacIntosh (not the computer people) tube power amp, he used ADA power amps live. It also had some of the Marshall too.
I'm pretty sure III Sides had the ADA, Marshall, and a Soldano SLO on it too.
These days he pretty much uses Marshall, he also endorses the H&K Triamp, but in the clips I've seen of him, there are Marshalls behind him.
Oh yeah, you have to have an old Rat pedal for his tone, it's pretty much always on, more as a tone filter than a distortion box, I think the distortion is set pretty low.
Of course, a significant part of his sound is the Bill Lawrence pickup too.
The Bill and Becky ones are the ones to get, that's what's in his main N4. Washburn uses the Bill Lawrence USA pickups in the guitars, probably because they are cheaper and quicker to get, but that's not the tone.