There's nothing more exciting for guitarists than finding a good Distortion pedal. This Distortion Pedal will lead you to an amazingly musical experience. Take it and rock    Features: Tube distortion simulation and built-in FET transistor.  True bypass design, minimizes tone loss and get more control of your pedal.  High gain distortion, low power consumption.  3 adjustable knobs: Gain, Tone, Level.  Gain knob : Adjusts the amount of distortion. Rotating it clockwise increases the effect, whereas counterclockwise rotation reduces the effect.  Tone knob: Controls the tone. Rotating the knob counterclockwise will make the sound milder, while rotating it clockwise will make the sound sharper.  Level knob: Adjusts the level of the effect sound.  Aluminum alloy housing, sturdy and durable.  Durable jacks and foot switch.  Designed with on / off LED, instructs effects status.  Powered by a 9V AC power adapter or 9V battery(neither included).   Specifications: Input impedance: 500 kohm;  Output impedance: 150 ohm;  Recommended load impedance: 10 kohm;  Equival input Noise: -90 dBu or less;  Power supply: DC 9V battery or AC adapter (neither included);  Current draw: 5.5 mA (DC 9V);  Product size: 11.5 * 6.5 * 5cm / 4.5 * 2.6 * 2in;  Product weight: 238g / 8.4oz;  Package size: 14 * 9 * 7cm / 5.5 * 3.5 * 2.8in;  Package weight: 283g / 10oz;   Package List: 1 * Distortion Effect Pedal;  1 * User Manual (English & Chinese)