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.