This is the metal distortion pedal from Donner Company with the name of Metal Head, which is also a pure analog circuit metal distortion pedal. And maybe it’s the smallest analog distortion effect ever. The improvement of the high frequency of the pedal makes the heavy tone-color and difficult skills perform in a clearer level. Entirely gaining and boosting the distortion degree of metal, has the special and strong distortion effect. Great tone, easy and perfect operation.