Vaiyen said:
no way dude. lots of sources actually; try the Steve Vai forum for starters.
He does use it as a boost. Thanks for the pointer. But "level on max and dist on 0" is kind of confusing. Here is what I've found so far from Vai.com.
"........With my set-up, when the distortion pedal is turned off the amp is a little dirty sounding. Kind of a chunky rhythm tone that I use as a basic sound for all the songs. If I back off the volume on the guitar the sound clears up enough to use it for cleaner songs. When I crank the volume on the guitar and hit the pedal it's usually pretty distorted but smooth.
The way I set the knobs on the DS-1 are tone control to about 9 o'clock, level at about 11 o'clock and the distortion to about 11 o'clock. If your amp is set very clean then crank the distortion on the pedal all the way up but smooth it out by bringing the tone way down, maybe to 7 or 8 o'clock. The basic sound is in the tone but most improtant is the way you hit the notes. The real tone is always in your head and fingers."............"
And check this link. Watch the marker around the knobs.
http://www.robertkeeley.com/audio6v6/index.html