Features: Additional shaping is achieved using the gain and tone controls You can use the Lo and off boost positions to get a great rhythm tone In this position play with the tone and gain knobs to recreate tones from your favorite bands or uniquely create your own sound Then switch it into Hi-Boost for a face melting solo True bypass provide transparent toneLED indicator shows working state Specifications:Material: Zinc Alloy color: Red Brand: Amuzik Effect: Distortion Material: Zinc Alloy Input Impedance: 1M Ohms Output Impedance: 470 Ohms Working current: 25 mA Item Size: 95*38*52cm37*15* 2in Item Weight: 248g88ozPackage included: 1 x Heavy Metal Pedal1 x User manualNotes:Please note this pedal can NOT powered by batteries Need a Dc 9V power supply with negative in the center to power up