The Mosky TM Overdrive mini pedal is a power plant of pure tone. It models its circuit upon the likes of the famous Timmy Overdrive. This is the perfect overdrive guitar effect pedal for your performance. Great tone starts here! • Single Knob Controls • Heavy Duty Footswitch • Three Internal Trim Knobs (bass,treble,Vol) • Input Impedance: 1M ohm • Output Impedance: 1k ohm • Dimensions (W/D/H): 92mm X 38mm X 36mm • Weight: 128g • True Bypass Switching • Power Consumption: 9VDC adapter only no battery compartment Features: Full metal shell, small size and big sound. Single knob control to adjust the degree of overdrive effect. The internal DIP circuit designed for transforming the overdrive frequencies. The overdrive effect is mellow, mild, smooth, dynamic and exquisite. The light flashing when working. True bypass in order to protect signal integrity when the pedal is not engaged. Foot-switch toggle controlling on/off condition. Specifications: Material: Zinc-Aluminium Alloy Color: Blue Model: 7M Input Impedance: 1M ohm Output Impedance: 1K ohm Working Current: 20mA Power Supply: 9V DC Charger (Not included) Item Size: 9.2 * 3.8 * 3.6cm / 3.6 * 1.5 * 1.4in Item Weight: 124g / 4.4oz Package Size: 11 * 6 * 6cm / 4.3 * 2.4 * 2.4in Package Weight: 156g / 5.5oz Also available many other superb sounding effects from MOSKY Look at my other listings.