Yep definitely a Peavey guy. Max preamps, 810 cabs, etc.
click this next one for a giant view where you can check out the rack...
and lastly in these pics from '95, you can see no less than 6 - Peavey 3620s

(2 right behind Pete, 2 to the right, and one each on far left and far right.) I assume some of them are for keyboards, the others for bass, and the 2 - 2x412 stacks for the guitar...
Look at Pete standing in front of the 3620s, you know you are a bad arse when you make them look small (Pete was 6' 7.5" according to an interview in 2008...)
Here's an awesome vid of Type O Negative in action - R.I.P. Pete:
