Features: Professional digital guitar effect pedal that based on Electr*-Harm*nix Big Muff PI circuit. (*=o) With volume, tone, sustain control knobs for you to adjust the parameter of the fuzz effect. 4-Mode selection knob to adjust at , ToneBender, M, Booster, each with independent indicator. DC9V 100mA power supply (center is negative polarity). Features of solid color, sturdy construction, good hand feeling, lightweight and durable. Small compact size pedal takes up little space on the pedalboard. A practical and easy-to-use effect pedal that will bring a richer expression to your performance and practice. Specifications: Material: Metal Effect Type: FUZZ Control: Volume, tone, sustain 4-Mode Selection Knob: , ToneBender, M, Booster One Toggle: Two voice Power Supply: DC9V 100mA - center is negative Item Size: 122 * 67 * 40mm / 4.80 * 2.24 * 1.57in Item Weight: 257g / 9.08oz Package Weight: 297g / 10.48oz Package Size: 14.7 * 7.8 * 7cm / 5.79 * 3.07 * 2.76in Package List: 1 * Effect Pedal