9V Power Supply for Guitar Effects Pedal, AC/DC Power Adapter for BOSS Pedal, 500mA, UL Listed, 6.6FT Cable

Adapter is marked with a negative tip. After it didn't work with my mini amp which requires a negative DC tip, I tested it with my tester. Turns out that the tip was positive. Instead of wasting my time returning it, I cut the wire and re-soldered it with the leads swapped. It worked. For all intents and purposes, it is defective.. I shouldn't have to "fix" it.

Ordered this power cable for the Rowin Nano loop station pedal. It does NOT power the pedal. I tried a different power cable with the same spec and it powered the pedal fine. I have to assume the product I was sent is faulty. I did not order a new one because for the same price I can try a different brand and hope I have more luck than with this cable.

Knew what I wanted, found it, ordered, and received. Could not have worked any better. Nice that there a good explanation of the polarity.I use these transformers to run strips of LED as night lights in my kitchen and courtesy lights when I come home at night. Nice to have enough light to see coming home in the dark without having to find a light switch.

Nope.... did not work at all, for a guitar pedal I bought on amazon. Cheap. Heats up immediately....

These didn't work for my TC Electronic pedals despite the description saying it would. Returned. Just go to a guitar shop and do it right the first time.

This power supply is NOT negatively centered despite the label's indication on the product itself. It does appear to be regulated at just over 9 volts. It does NOT work as a substitute for the Boss PSA 120 power supply. I do not blame the seller, but I DO blame the manufacturer.

Works on my boss pedal. I damaged my original cord moving furniture. This was a perfect replacement.

Works for the Dunlop original wah cry baby pedal!