The Mopher pedal can make your little fresh tube AMP a fuller and louder sound as the "Full Stack" sound effect. Maintaining the original sound structure. Therefore,it will be no panic frequency. Neither dull bass nor obtrusive medium frenquency. The clip inside the pedal is JRC4558D which has better adaptability to the distortion including three modesFeature1.High degree distortion degree of metal, stable to solo,2.Has strong expression with dynamic echo sound3.Whole aluminium-alloy classic, mini and well built4.Three Modes:Natural &Tight & Classic.5.True bypass provide transparent tone6.LED indicator shows the working stateSpecifications1.Input impedance: 1 M Ohms2.Output impedance: 95 Ohms3.Working current: 13 mA4.Power Supply: 9V AC adapter (positive Tip)5.Dimensions: 95mm (D)*44mm (W)*48mm (H)6.Weight: 240g (with box)Precautions•Environment:1. Do not use the pedal in high temperature, high humidity, or subzero environments.2. Do not use the pedal in the direct sunlight.•Please do not dissemble the pedal by yourself.•Please keep the manual for future reference.Package included:1 x Donner Morpher Distortion Effect Pedal1 x User’s Manual