Guitar Effect Pedal Description Features Professional digital guitar effect pedal based on the Electro-Harmonix Big Muff PI circuit. Equipped with volume, tone, and sustain control knobs to fine-tune the fuzz effect. 4-mode selection knob featuring π, ToneBender, M, and Booster, each with an independent indicator. Operates with a DC9V 100mA power supply (center-negative polarity). Solid color and sturdy construction offer a pleasing hand feel. Lightweight and durable. Compact size ensures minimal space is taken on the pedalboard. An easy-to-use effect pedal that enhances performance and practice with richer expression. Specifications Material: Metal Effect Type: FUZZ Control: Volume, Tone, Sustain 4-Mode Selection Knob: π, ToneBender, M, Booster One Toggle: Two voice Power Supply: DC9V 100mA - center-negative Item Size: 122 x 67 x 40mm / 4.80 x 2.24 x 1.57 inches Item Weight: 257g / 9.08oz Package Weight: 297g / 10.48oz Package Size: 14.7 x 7.8 x 7cm / 5.79 x 3.07 x 2.76 inches Package List 1 x Effect Pedal