Guitar distortion fuzz effect pedal based on electro-harmonix Big Muff Pi. SUSTAIN knob adjusts the amount of sustain and distortion; VOLUME knob sets the output level. TONE knob provides a range of sounds from high treble to deep bass. True bypass footswitch for switching between overdrive effect and bypass status. LED light for indicating effects or bypass status. Full metal shell and compact size, durable and portable. Power Supply: DC 9V AC adapter Input: 1/4 inch monaural Jack Output: 1/4 inch monaural Jack Item Weight: 147g / 5.2oz colour:black Material:metal size:9.3 * 3.8 * 3.2cm Package Contents: 1 * Effect Pedal Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 24 hours.