Digitech MOSAIC Polyphonic 12 String Effect PedalThe DigiTech Mosaic Polyphonic 12 String effect pedal sets you upon the path of creating lush 12 string sounds with either 6 string electric or amplified acoustic guitars. Immediately identifiable 12 string tones are now yours with octave low strings and doubled high strings. Single notes and full chordal strums shine with polyphonic richness and celestial movement that will inspire you. The Mosaic's balanced low end response with crisp octave shimmer