well, anybody know, me and my guitarist got into a fierce debate about this, he is sure its ibanez, but i scoured the list of ibanez artits and found nothing, does anyone know??
John Petrucci Fanclub (Member #2), PM chase09 to join
im pretty sure its esp's/ltd's

being the fact they use lespaul styled guitars and thats esp/ltd's main design.

search thru their artist list
According to wiki, which I suggest taking 5 seconds to use next time, they use Caparison guitars.
Someones knowledge of guitar companies spelling determines what amps you can own. Really smart people can own things like Framus because they sound like they might be spelled with a "y" but they aren't.
Adam used a caparison when I saw them in Birmingham in Jan
Guitars: ESP/LTD F-2005, Schecter Omen 6
Pedals: Boss NS2, CH1, TU2
Amp: Marshall DSL 100 head, Marshall JCM 900 1936 2x12 cab