Re: HCAF Mythbusters! Dave Jerden on AIC's Dirt guitar tone.
He's right, too.
Also, the fact it's clearly a cobbled-together collection of random shit they had laying around. Here's an expensive boutique map that belongs to the studio, part of his live rig, some random old cab, and a DI box/practice amp from a decade prior. And a 57.
I am reminded of all the making of the Black Album stuff, where Bob Rock, Randy Staub, and James Hetfield state explicitly phase is key to getting those OTT larger-than-life multi-everything sounds. Actually, that that sound in particular was created by manipulating phase. They come out and say it. 'Course, the intarwebs wants to think they can just buy a magic amp, so that's what gets obsessed over.