Combination Buffer Circuit and Clean Boost pedal. Buffer Circuit maintains signal integrity, tone by preventing loading and allows the use of longer cable runs. Boost is 20dB footswitchable with Level knob. Power from 9V battery or adapter. Cold-rolled steel housing, quick clip battery door and two-year warranty. Features include: · Clean Boost with 20dB of adjustable boost · Built-in True Tone Buffer to maintain tone and signal integrity · Dual LED indicators (Power & Boost) · Cold-rolled steel housing, quick clip battery door & two-year warranty · Works with Guitar, Bass or Keys