Aura Acoustic Imaging Technology in a familiar effects pedal format! Acoustic musicians can easily and accurately reproduce the sound of their instrument as miked in a professional studio. Easy to set up and use, Aura Acoustic Imaging Pedals eliminate intrusive stage noise and expensive microphone setups, allowing you reveal the true, unique voice of your instrument in any amplified performance. Features Six models feature 16 Images each for use with the most popular guitar bodies (Dreadnought, Concert, Orchestra, Jumbo, Nylon and 12 String) Volume, Blend, and Image Select controls Feedback-fighting Phase switch Bypass/Mute foot switch Input Trim with Clip/Low Battery indicator Designed for use with guitars featuring undersaddle or soundhole pickups Runs on 9V battery or power adapter 24 bit A/D/A; 32 bit internal processing Dimensions: 5.6L x 4W x 2.1H