The Electro-Harmonix Mole Bass Booster Pedal helps bassists and guitarists unearth a positively subterranean sound. Based on the classic design, this updated Electro-Harmonix pedal adds the same rich, low-end bottom while adding a 20dB boost to your signal. Whether you step on the Mole to get deep, ground-shaking drive or dial back the knob to add some texture to your existing tone, the Electro-Harmonix Mole Bass Booster digs wherever you tell it to.