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Have you ever found strange noises jumping out of nowhere when using several pedals together?The biggest reason that produces such annoying sound is that pedals are connected in a parallel mode. With such parallel connection each pedal forms a ground loop, which brings the noises from other magn..

 The JOYO ZGP is a wide-range voltage input power supply filter, specially designed for isolating a power supply's hum and noise to make your pedals sound cleaner and only give you the signal you actually want! It is well known that power supply hum and noise are insufferable to guitarists ..