MOOER Audio SHIM VERB Guitar Effect Pedal. Model:MRV1 The Mooer Micro ShimVerb Reverb Guitar Effects Pedal is a super versatile, compact pedal with 3 reverb modes: Room, Spring, Shimmer. The Room mode has different sized true acoustics reverb, from room to hall; the Spring mode is good for vintage 60's surf and blues sound; the Shimmer mode is very popular in modern rock and other styles of music. The Mooer ShimVerb will add flavor to any pedal-board! Mooer Micro ShimVerb Reverb Guitar Effects Pedal Features 3 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: Add rich overtone into the reverb sound, spacy, smooth and shining, very popular in Post Rock music Features and Specifications Mooer Audio micro effect pedals pack an incredibly BIG sound into a very small package. Very small and exquisite Full Metal Shell True bypass Specifications Input: 1/4” monaural jack (impedance: 1M Ohms) Output: 1/4” monaural jack (impedance: 470 Ohms) Power Requirements: AC adapter 9V DC (center minus plug) Current Draw: 40 mA Dimensions: 93.5mm (D) 42mm (W) 52mm (H) Weight:160g Accessories: Owner’s Manual