This is a perfect one-knob problem solver toolkit in pedal form for your performance. There is a big difference from the which would color your bypassed tone. Great tone starts here! Features: Full metal shell, exquisite and big sound. Single knob control to adjust the degree of booster. volume =0: clean buffer. volume >0: clean boost. Offering excellent, stable buffering and a fantastic clean boost. The light flashing when working. True bypass switching 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: Green Model: Dec 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: 158g / 5.6oz Package List: 1 * Guitar Effect Pedal Note: Item color displayed in photos may be showing slight difference on your computer monitor due to the light or different monitors.