Worst pedal power supply i have ever used.

Excellent power supply

After asking my electrical engineer brother about it he said the switching power supply was causing the problem and brought it his nice adjustable power supply and the interference went away.

Great Power Supply

At first I thought my petal was broken, but nope its just the power supply, my petal works just fine with other power supplies

This is a great power supply with no noise

Buy a better power supply.

I would not recommend this power supply - even at this ridiculously low price.

Good power supply