The Jerry Douglas Signature Aura Pedal features 16 custom Fishman Aura Images created and used by Jerry Douglas specifically for resophonic guitars. The effect pedal features 24 bit A/D/A; 32 bit internal processing, volume, blend, and image select controls, a feedback-fighting phase switch, bypass/mute foot switch, and input trim with clip/low battery indicator. Runs on 9V battery or Fishman 910R or suitable power adapter (not included). Larry Fishman developed this Signature Series Aura Pedal with a world-class team of professionals, including musician Jerry Douglas, recording studio engineer Bil VornDick, and renowned resonator builder Paul Beard, to bring you the most realistic amplified tone available. Night after night, or any time you record, this Fishman Aura pedal lets you reproduce the tone that can only be created by such trade masters.