Features 1、Professional digital guitar effect pedal that based on D*D250, D*D YJM308, MXR DIST*RTION- circuit. (*/u003dO) 2、With level, gain control knobs for you to adjust the parameter of the parameter of the effect. 3、4-Mode selection knob to adjust at Si, Ge, Soft, Boost, each with independent indicator. Specification Features: Professional digital guitar effect pedal that based on D*D250, D*D YJM308, MXR DIST*RTION- circuit. (*=O) With level, gain control knobs for you to adjust the parameter of the parameter of the effect. 4-Mode selection knob to adjust at Si, Ge, Soft, Boost, each with independent indicator. Dual toggle switch: One three modes toggle: mxr/d250/yjm308, and one low frequency (LOWS) toggle switch. DC9V 100mA power supply (center is negative polarity). Features of solid color, sturdy construction, good hand feeling, lightweight and durable. Small compact size pedal takes up little space on the pedalboard. A practical and easy-to-use effect pedal that will bring a richer expression to your performance and practice. Specifications: Material: Metal Effect Type: Distortion/overdrive/PREAMP Control: Level, gain 4-Mode Selection Knob: Si, Ge, Soft, Boost 3-mode Toggle: Mxr/d250/yjm308 Power Supply: DC9V 100mA - center is negative Item Size: 122 * 67 * 40mm / 4.80 * 2.24 * 1.57in Item Weight: 254g / 8.95oz Package Weight: 296g / 10.45oz Package Size: 14.7 * 7.8 * 7cm / 5.79 * 3.07 * 2.76in Package List: 1 * Effect Pedal Package List 1 * Effect Pedal