I just noticed that they both use a Boss DS-1. Satch with his Marshall and Vai with his Carvin. Do they use stock DS-1's or modded? And if they are modded, who modded them? I'm thinking of just buying a Fender Hot Rod and running a distortion pedal through it, along with a bunch of other pedals. And if these two gentleman get their distortion via a stomp box, then I'd like to look into that instead of throwing down big bils for a Mesa.