Features 1、The US dream distortion effect pedal gives your cleanly amplifier another distortion channel, which simulates a drive tube amplifier with high gain distortion tones 2、Three knobs are separately used to adjust the distortion(distortion knob), adjust the volume of sound(volumn knob) , and adjust the strength of the tone(tone knob) 3、True Bypass designs can minimize tone loss to realize the original sound of your guitar 4、LED visually indicate the working status of the guitar pedal, powered by DC 9V adapter, very convenient 5、Aluminum alloy casting have fine finished surface and stylish appearance. Equipped with standard 1/4 inch input and output sockets MainKey Specification Item Type: Electric Guitar Effect Pedal Model: JDF-4 Input Impedance: 1m Ohms Output Impedance: 1k Ohms Working Current: 10mA Power Supply: DC9V adapter (not included) Suitable For: Electric guitar Size: Approx. 4cm / 1.6in Approx. 9.1cm / 3.6in Approx. 3.2cm / 1.3in Approx. 1.9cm / 0.7in Approx. 1cm / 0.4in Package List 1 x Electric Guitar Effect Pedal 1 x User Manual