Bulk up your guitar tone with a click of a switch. Kick into your solo with a burst of tone. Two-Band Equalizer. Two multi-pole sharp cutoff filters. Up to 6db Gain. Works with bass or guitar. Maximizes tone flexibility of instrument. Lows/Highs/Level Controls. Excellent dynamic response. Simple, easy to use design. 100% Analog design with True Bypass circuitry. "Effects on" indicator light. Micro pedal package - very small and compact.