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Look up onPlease read! I am listing this as good because for some the sound cuts out when you turn it on. I sounds and looks fantastic, but you need to fiddle with the switch to work properly. The light always comes on, so I'm thinking a loose jack connection?? I'm not sure. It did this when I purchased it on here, but since I used it with a loop switcher, it was always on and didn't bother me. I'll bet it's an easy fix, but I don't have time to play with it. Please ask any questions and I'll answer them the best I can. Catalinbread Callisto Chorus/Vibrato Pedal:All-analog chorus/vibrato pedal can be powered by 9V battery or external power supplyBucket Brigade chip is precise and reliable; low-noise Burr-Brown op-amp gives clean amplificationShimmery, chimey chorus in an intuitive interface; simple and easy to useWarbly vibrato effects modifiable through Mix and Rate knobsDensity control changes delay line time from classically fat to airy, subtle chorusesSweep depth is controlled by turning the Width knobRugged metal chassis and footswitch are ready for the roadMade in the USA

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