Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal

Works perfectly

I bought a tape recorder that didn't come with external power, and the one I had fit just fine, but still didn't work because polarity was backwards. Thus: this perfect little device swaps tip to ring within the barrel connector, and seamlessly lets me proceed with using the same power device for multiple units. EXCELLENT; SIMPLE; PERFECT solution!

Needed this for a Casio keyboard, bought in a thrift shop with no power cord. I have lots of 'em with the right voltage, but Casio uses a nonstandard polarity (presumably to make us buy their proprietary power cord). This adapter changed my standard polarity cord to fit their keyboard. Worked great and saved me $20!

I purchased these because I got a couple 9-volt battery connector/adapters from eBay to use with some guitar pedals, and when they arrived, I realized the polarity was the reverse of what the pedals required. Instead of going through the hassle of returning them, I found these polarity reversers. They did the job, so now they're permanently connected to the 9-volt battery connector/adapters! The quality's pretty decent, so imagine as long as I don't abuse them, I think they'll last for a while.

Converts either direction of polarity.

They seem well made and I tested them all with a volt meter, they do what they say, but unfortunately they do not fit the Eventide Factor pedals I bought them for.

Yes I would definitely recommend these they're definitely work

Used this to adapt a standard guitar pedal power supply to work with a KAT drum pad that has a positive center pin connection. Simple and inexpensive fix to replace old PS that died. Easier and cleaner than rewiring the pedal supply connector.

Works great ...finally can power my tonex pedal from my power bank via USB and a USB C to DC adaptor cable. You need this converter cable to make it work, just the USB to DC cable won't cut it. Guitar pedals are center pin negative. Solid connection and great quality cable glad I got the 2 pack.

Funziona benissimo.

I sometimes film football matches, no problem when there is mains power but if not then I have to use the camera batteries. I also use a 9" monitor that comes with an in built battery that unfortunately never lasts the full 90 minutes or more. I recently found in my video gear a separate back up battery for an old monitor that was the right voltage so I tried it with my 9" monitor but it just didn't work, I knew it was charged up so just thought for some reason it was not compatible. I then thought perhaps the plug was the wrong polarity so I bought these thinking they probably wouldn't work and bingo the one the correct size did. Wish I had known about these before, absolutely brilliant.

Works great for my guitar pedal

Esegue perfettamente la sua funzione, abbastanza robusto e preciso nella connessione senza giochi. Indispensabvile per l'alimentazione di pedalini per chitarra elettrica e multi effetti senza alimentatore proprio. Consigliato