Gain Box

The Gain Box is a boost from OPFXS designed to lift signal strength and push the front of an amp or another pedal harder.

It works as a clean level boost for solos, a way to drive an amp into breakup, or an always-on dynamics-shaping stage that adds presence and punch. Its focus on clean gain makes it a flexible utility for setting overall level and hitting the next pedal harder. A simple, effective front-of-chain or end-of-chain boost. Its clean, uncoloured gain keeps your core tone intact while adding level.