MOSKYAudio XP Booster Electric Guitar Effect Pedal Mini Single Effect with Clean Boost True Bypass This is the perfect XP booster guitar effect pedal 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. Use the highest quality parts available with a discrete FET design and low impedance output. XP booster provides up to +20dB of unadulterated boost with multi-dimensional shimmering that highs and lows, and no ear fatigue.  The internal DIP switches let you choose the boost frequencies, and EQ settings. 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: XP Input Impedance: 1M ohm Output Impedance: 1K ohm Working Current: 20mA Power Supply: 9V DC or 18V AC 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.