Mooer MDL3 Micro Series Echolizer Delay Effect PedalTape Echo Delay Pedal w True Bypass Features: Very similar to analog delay. Warm, vintage delay sound Mooer Audio micro effect pedals pack an incredibly BIG sound into a very small package. Housed in a sturdy metal enclosure for road worthy durability. Specifications Small, light weight and exquisite guitar effect True Bypass Switching Requires external 9V power supply (center minus plug) for operation. Not included. Mooer pedals have a 1 year