The JOYO ZGP is a wide-range voltage input power supply, 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 effects pedals' hum and noise are insufferable to guitarists.
Changes the normal daisy chain power supply into a real independent daisy chain output power supply
It filers ripple noise from the adapter,
It provides 800mA working current
Breaks the ground loop and offers independent output
It provides stable 9V output voltage