The JOYO JP02 power supply includes the power supply module, a AC- DC supply for the model and all the DC cables required to run your pedals.
Tested by thousands of users worldwide, our JP-02 power supply is specially designed to power up your effects pedals, without interference, power surge or loss to your effects.
A power supply on its own won't reduce the noise in your system compared to batteries, where it can help is that if you're using multiple supplies and you have an earth loop (which creates a hum) the reason for the hum is that when you are running different supplies and have different paths to earth (its quite a complex subject). If you need help choosing the best option please let us know.