Up to +20db of uncolored boost. With the knob on zero it does nothing, no boost but no alteration of your tone. As you turn it up it boosts your signal without coloring your tone. Boost a lead, blow up the input gain stages of a tube amp, drive a chain, it does these things while leaving your tone intact.

Hand wired construction with free standing jacks. This pedal should stand the test of time but if something does go wrong, it's designed to be worked on easily. No need to throw it in the trash or the non working pedal pile.

$120.00 + $10.00 for shipping