

⚡ Power your gear your way — no more polarity puzzles!
The Mr.Power Reverse Polarity Converter Cable (5.5 x 2.1mm) is a 2-piece set designed to convert power polarity for keyboards and guitar effect pedals. With a compact 173mm length and durable coaxial construction, it enables standard power supplies to work with devices requiring reverse polarity, saving users from costly proprietary cables.













| ASIN | B07YJKJY7C |
| Best Sellers Rank | #3,895 in Musical Instruments ( See Top 100 in Musical Instruments ) #142 in Instrument Cables |
| Brand | Mr.Power |
| Brand Name | Mr.Power |
| Cable Type | Coaxial |
| Color | Black |
| Compatible Devices | PC |
| Connector Gender | Male-to-Female |
| Connector Type | Male-to-female |
| Customer Package Type | sealed anti-static bag |
| Customer Reviews | 4.7 out of 5 stars 370 Reviews |
| Indoor Outdoor Usage | Indoor |
| Item Shape | Round |
| Manufacturer | Mr.Power |
| Model | MP-RPC-5521-2 |
| Number of Items | 2 |
| Number of Pins | 2 |
| Other Special Features of the Product | Low Voltage |
| Outer Material | Plastic |
| Recommended Uses For Product | Connecting guitar effect pedals to amplifiers or keyboards to power supplies |
| Special Feature | Low Voltage |
| Unit Count | 1 Count |
K**Z
Use a standard power supply with nonstandard electronics
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!
C**S
Works to reverse polarity on cameras
Worked great with Panasonic convertible cameras
S**V
Simple fix to adapt 9V guitar pedal power supply for use with positive center pin device
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.
J**J
ESSENTIAL for tape recorder power unit
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!
M**T
Way easier than making your own.
Don't know who decided this, but many musical accessories and most Guitar effects devices usually require power supplies with connectors where the pin in the center of the connector has negative voltage. This is opposite to standard DC power supplies which deliver positive voltage to the pin. Get it wrong and the device may get cooked. I use these polarity reversing cables so I can use rechargeable battery packs to power pedals and other effects. I put bright colored tape on them as a warning. I forgot the reverser was still in line when recharging one of the battery packs and literally smoked it.
F**A
The most important thing to me is that these things work
Yes I would definitely recommend these they're definitely work
J**L
Good but not a fit for Eventide pedals
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.
M**S
Works great.
I bought a used non-working Arion Stereo Analog Delay pedal on Ebay for almost nothing. The seller said it would just make a buzzing noise. I knew from experience that those pedals had a reverse polarity input and would just make a buzzing noise if the polarity of the power cable was wrong. This converter cable did the trick.
Trustpilot
3 days ago
2 weeks ago