Item Type: Guitar Effect Pedal_x000D_ Model: JDF-10_x000D_ Main Material: Aluminum alloy_x000D_ Input Impedance: 500K Ohms_x000D_ Output Impedance: 10K Ohms_x000D_ Running Current: 7mA_x000D_ Power Supply: DC 9V Adapter(not include)_x000D_ Size: Approx. 9.1 x 3.2 x 4cm / 3.6 x 1.3 x 1.6in, 1.9cm / 0.7in, 1cm / 0.4in 1Vintage overdrive effect pedal possess mellow, mild, smooth and simply exquisite, also has good sustained sound effect 2Three knobs are separately used to adjust the degree of distortion (drive knob), adjust the volume of sound (volume knob), and adjust the strength of the tone (tone knob) 3Aluminum alloy casting with fine finished surface and stylish appearance. Powered by DC 9V adapter, convenient to use 4Come with True Bypass designs, which minimizes tone loss to realize the original sound of your guitar 5LED can visually indicate the working status of the guitar pedal, equipped with standard 1/4 inch input and output sockets1 x Guitar Effect Pedal 1 x User Manual