We are pleased to announce the new JOYO JP04 power supply for guitar effect pedals. It's a true isolated power supply !
The biggest cause that produces such an annoying sound is that guitar effect pedals are traditionally connected in a parallel mode. With such parallel connection each pedal forms a ground loop, which brings the noises from other magnetic fields into the signal path and all the other pedals are interfered and become unstable.
To solve this problem, all you need to do is to get rid of the ground loop issue, (isolation) & make sure each pedal workS in an independent route, most importantly by choosing a power supply that considers this issue. Ideally a real independent output that is free from ground loop troubles. The JOYO JP-04 is an isolated power supply available for guitar pedals. It uses a high quality 'R' transformer.
It has eight 9V outputs with an independent power cable and ground wire, each output is completely isolated, complete with short-circuit and over current protection, it is by far a highly filtered and regulated power supply. This ensures a reliable operation, free from any hum or noise from your pedals.
It will provide you with the cleanest and most transparent sound possible.