Donner Giant Metal Guitar Pedal Boost Distortion Effect 3 Modes Entirely gaining and boosting the distortion degree of metal, has the special and strong distortion effect Whole aluminium-alloy classic, stable and strong True bypass provide transparent tone, LED indicator shows the working state The improvement of the high frequency of the pedal makes the heavy tone-color and difficult skills perform in a clearer level The hi boost provides the players the most expressive metal sound