Product Features Three Reverb Modes: Room, Spring, Shimmer Room: Different sized true acoustics reverb, from room to hall. Spring: Simulates a classic spring reverberation, vintage 60’s Surfing sound. Shimmer: Adds rich overtone into the reverb sound, spacy, smooth and shining, very popular in Post Rock music. Full metal shell Very small and exquisite True bypass Requires DC 9V Adapter power supply
source: http://www.mooeraudio.co.uk