Zoom A2 - Acoustic Effects Pedal The rich, detailed tone of an acoustic guitar is created by a delicate triple harmony of strings, neck, and body. But a piezo or magnetic pickup never captures the full body resonance, often resulting in thin sound dominated by the strings. This tendency can't be fully compensated with a conventional preamp equalizer. The A2 series incorporates 24-bit / 96 kHz sampling and sophisticated sound modeling technology to process the line signal from the pickup, adding a lush body tone and the spatial ambience that is created by mic recording. Even when playing through an amplifier or PA speaker, the resonance of the guitar body is restored, allowing the natural acoustic sound to shine through. Zoom A2 Features: 12 acoustic guitar /pre-amp modeling 8 effect modules 3 types of chorus and slap reverb 47 effect types 32-bit processing, 96kHz sampling rate 24-bit A/D, D/A converters 20Hz 40Hz Flat Response Built-in PCM drum machine Integrated chromatic tuner Sturdy metal chassis with rubber side-guard shells Operates on 4 AA batteries, or AC power adapter (not included)