---
product_id: 243401001
title: "Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 For Keyboard Guitar Effect Pedal (2 pcs)(Black)"
brand: "mr.power"
price: "€ 31.60"
currency: EUR
in_stock: true
reviews_count: 5
category: "Mr.Power"
url: https://www.desertcart.be/products/243401001-mr-power-reverse-polarity-converter-cable-5-5-x-2
store_origin: BE
region: Belgium
---

# Perfect for guitar & keyboard pedals 5.5x2.1mm jack size Reverses polarity effortlessly Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 For Keyboard Guitar Effect Pedal (2 pcs)(Black)

**Brand:** mr.power
**Price:** € 31.60
**Availability:** ✅ In Stock

## Summary

> 🔄 Power your pedals your way — no compromises, just pure tone!

## Quick Answers

- **What is this?** Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 For Keyboard Guitar Effect Pedal (2 pcs)(Black) by mr.power
- **How much does it cost?** € 31.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/243401001-mr-power-reverse-polarity-converter-cable-5-5-x-2)

## Best For

- mr.power enthusiasts

## Why This Product

- Trusted mr.power brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Ready:** 173mm length fits perfectly in tight pedalboards or setups without clutter.
- • **Dual Pack Advantage:** Two cables included—double your flexibility and never miss a beat.
- • **Flip Your Power Game:** Seamlessly reverse polarity to fit any pedal or keyboard power input.
- • **Pro-Grade Compatibility:** Designed for 5.5x2.1mm plugs, ensuring a solid, reliable connection every time.
- • **Save Money, Stay Powered:** Avoid proprietary power cord costs by adapting standard supplies instantly.

## Overview

The Mr.Power Reverse Polarity Converter Cable (5.5x2.1mm, 173mm length) is a must-have for musicians and keyboardists who need to switch power polarity between center positive and center negative. This 2-pack cable set ensures compatibility with a wide range of guitar effect pedals and keyboards, saving you from costly proprietary adapters. Built for reliable indoor use with a sturdy male-to-female coaxial design, it supports up to 2A current and delivers a clean, secure connection every time.

## Description

Product Description Reverse Polarity Converter Cable One male plug and one female plug. Jack Size: 5.5mmx 2.1mm . Length: 173mm. Color: Black. Description Functions: to reverse the center Positive output to center Negative , or reverse the center Negative to center Positive. Reverse Polarity what you want, fit for keyboard and guitar effect pedal. Package Content 1 Pcs x Reverse Polarity Converter Cable Note: Please make sure your cord end is 5.5x2.1mm compatible. . Do Not exceed 2A max.

Review: The missing like to power guitar pedals - 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.
Review: 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!

## Features

- One male plug and one female plug
- Reverse Polarity what you want, fit for keyboard and guitar effect pedal
- Jack Size: 5.5mmx2.1mm
- Length: 173mm
- 2pc Effect Pedal Cable

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07YJKJY7C |
| Best Sellers Rank | #23,573 in Musical Instruments ( See Top 100 in Musical Instruments ) #53 in Patch Cables |
| Brand | Mr.Power |
| Brand Name | Mr.Power |
| Cable Type | Coaxial |
| Colour | Black |
| Compatible Devices | PC |
| Compatible Phone Models | No Compatible Phone Models |
| Connectivity Technology | Auxiliary |
| Connector Gender | Male-to-Female |
| Connector Type | Male-to-female |
| Country of Origin | USA |
| Customer Package Type | sealed anti-static bag |
| Customer Reviews | 4.7 out of 5 stars 169 Reviews |
| Indoor Outdoor Usage | Indoor |
| Item Shape | Round |
| Manufacturer | Mr.Power |
| Model Number | MP-RPC-5521-2 |
| Number Of Pins | 2 |
| Number of Items | 2 |
| Other Special Features of the Product | Low Voltage |
| Outer Material Type | Plastic |
| Part Number | Reverse Polarity Converter Cable |
| Recommended Uses For Product | Connecting guitar effect pedals to amplifiers or keyboards to power supplies |
| Special Feature | Low Voltage |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Mr.Power
- **Connector Type:** Male-to-female
- **Cable Type:** Coaxial
- **Compatible Devices:** PC
- **Special Feature:** Low Voltage

## Images

![Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 For Keyboard Guitar Effect Pedal (2 pcs)(Black) - Image 1](https://m.media-amazon.com/images/I/41Ke6H0swzS.jpg)
![Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 For Keyboard Guitar Effect Pedal (2 pcs)(Black) - Image 2](https://m.media-amazon.com/images/I/51Xbq9ichzL.jpg)
![Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 For Keyboard Guitar Effect Pedal (2 pcs)(Black) - Image 3](https://m.media-amazon.com/images/I/51DCPj3KfHL.jpg)
![Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 For Keyboard Guitar Effect Pedal (2 pcs)(Black) - Image 4](https://m.media-amazon.com/images/I/6122xcUuR9L.jpg)
![Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 For Keyboard Guitar Effect Pedal (2 pcs)(Black) - Image 5](https://m.media-amazon.com/images/I/61bjpaMyONL.jpg)

## Questions & Answers

**Q: Does it work with 9 volts**
A: I use it for 9 volts. Works great!

**Q: Is this cable also the right size for 12Volt battery pack?**
A: The plug size is 5.5 x 2.1mm. 
If your device has the same plug size, it can fit for.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The missing like to power guitar pedals
*by S***X on 7 November 2025*

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.

### ⭐⭐⭐⭐⭐ Use a standard power supply with nonstandard electronics
*by K***Z on 4 February 2026*

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!

### ⭐⭐⭐⭐⭐ Just the job.
*by O***A on 18 July 2026*

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.

## Frequently Bought Together

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-08-01*