In the middle ranges of the Output and Distortion controls, you'll find soft-clipped distortion tones that sound truly retro-authentic, especially when they're mixed with a splash of reverb. Pushing Distortion up higher produces classic fuzz tones that are finding their way onto an increasing number of albums. A welcome, enjoyable alternative to LA saturation and British crunch. Power: Single 9 volt battery or Dunlop ECB-003 AC adapter - Controls: Footswitch toggles effect on/bypass (red LED indicates on) Output knob sets total output gain Distortion knob adjusts ratio of clean signal with distortion.