Nothing that wasn’t 100% badass because that album is nothing but 100% badass.
Straight from the horse’s mouf-

Ty's rig at the time?
“I was in the middle of a [gear] transition right when Brendan [O’Brien, producer] came to us and said, ‘Do you want to do a record together?’ We were like, ‘Of course!†We were very excited because he was basically working with only multi-platinum people. I was all excited about it, but right before it I had quit using
the gear that I had been using for years and switched to Mesa Boogies and Marshalls.
“I hadn’t tweaked it yet, so when I got in there with Brendan, we didn’t spend any time on guitar tones – hardly at all. We just kind of cranked it up, put some mics on it, and went. Brendan tweaked it to where he was happy with it, and I trusted him with it.
“But we had done some demos for the Dogman record – which we actually released [2005’s Dogman Demos] – some of the playing we thought we played better on the demos, when we weren’t too worried about it. That was the very first recording I did with the new amps. You can sort of compare it with what Brendan did – he brightened them up a bit and made them a little more edgy sounding.”
The amp he’s referring to apparently was the aforementioned rackmount Dual Recto. Apparently Ty did an interview for a guitar mag on his rig at the time, but I couldn’t find it. Various internet folks peg it as the red/modern channel, Gain and Vol wide open, possibly with the Presence at “cut.”
His guitar was a custom Ty Tabor model Zion, a Strat-style guitar like his beloved Fender Elite Strat. The Zion had a basswood body with maple cap, now EVH’s favorite tonal combo. The Zion had three Joe Barden pickups, three buttons for pickup selectors (like the Fender Elite) and an onboard preamp (ditto). No tone controls, and a big vol knob.
The neck was maple with a rosewood board and locking Sperzels up top.
http://www.woodytone.com/2010/11/16/kings-x-dogman-all-killer-tabors-rig/