Champion Leccy's bite-sized beast pulls out all the stops for players looking to take their drives to the next level. The Fettle Boost is a JFET drive pedal that packs an awesome overdriven punch with precise tone-sculpting capabilities. Starting out, the Fettle Boost offers a great clean boost that teeters on the edge of breakup. With a flick of the Clart switch for some extra boost, a swap of the Hip-Ass switch for bass control, and a turn of the Fettle dial, the Fettle Boost turns into a different beast altogether. The authentic breakup this pedal brings to a board is outstanding, from mild boost to all-out distortion. Tonally transcendent, The Fettle Boost does not pull punches when it comes to its overdriving capabilities. This is a boost to write home about.