--- product_id: 32425009 title: "Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal" brand: "mr.power" price: "155 kr" currency: NOK in_stock: true reviews_count: 13 category: "Mr.Power" url: https://www.desertcart.no/products/32425009-reverse-polarity-converter-cable-5-5-x-2-1-keyboard store_origin: NO region: Norway --- # Compact 17.3cm length Reverse polarity conversion 5.5x2.1mm universal jack Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal **Brand:** mr.power **Price:** 155 kr **Availability:** ✅ In Stock ## Summary > 🔌 Flip the switch on power problems — stay plugged in, stay unstoppable! ## Quick Answers - **What is this?** Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal by mr.power - **How much does it cost?** 155 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/32425009-reverse-polarity-converter-cable-5-5-x-2-1-keyboard) ## 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 - • **Trusted by Pros:** Highly rated with 4.7 stars from 396 users who swear by its flawless performance. - • **Plug & Play Ready:** Includes one ready-to-use cable so you can power up instantly and never miss a beat. - • **Polarity Perfected:** Effortlessly flips polarity to keep your gear powered without the hassle or risk of damage. - • **Compact & Organized:** At just 17.3cm, it keeps your pedalboard sleek and clutter-free for that pro setup look. - • **Universal Compatibility:** Seamlessly fits all 5.5mm x 2.1mm barrel connectors for your keyboard and guitar pedals. ## Overview The Mr.Power Reverse Polarity Converter Cable is a compact, 17.3cm male-to-female coaxial cable designed to convert polarity for 5.5mm x 2.1mm barrel connectors. Ideal for keyboard and guitar effect pedals, it ensures universal compatibility and reliable low-voltage power delivery, backed by a 4.7-star rating from nearly 400 users. ## Description Buy Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal | Keyboard Guitar Effect Pedal: Instrument Cables - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Mr.Power Reverse Polarity Converter Cable - Works perfectly Review: 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! ## Features - Connector Configuration: Features one male plug and one female plug for versatile connectivity options - Reverse Polarity Functionality: Converts polarity as needed for use with keyboard and guitar effect pedal applications - Standard Jack Size: Compatible with 5.5mm x 2.1mm barrel connectors for universal fit - Compact Cable Length: Measures 173mm in total length for convenient pedal board setup and organization - Package Contents: Includes 1 piece effect pedal cable for immediate use with your audio equipment ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B016XFCVSY | | Best Sellers Rank | #8,526 in Musical Instruments ( See Top 100 in Musical Instruments ) #114 in Stage & Studio Patch Cables | | Brand | Mr.Power | | Brand Name | Mr.Power | | Cable Type | Coaxial | | Color | black | | Compatible Devices | PC | | Compatible Phone Models | No Compatible Phone Models | | Connector Gender | Male-to-Female | | Connector Type | Male-to-male | | Customer Reviews | 4.7 out of 5 stars 396 Reviews | | Indoor Outdoor Usage | Indoor | | Item Length | 17.3 centimeters | | Item Shape | Round | | Item Weight | 0.01 kg | | Manufacturer | Mr.Power | | Maximum Voltage | 12 volts | | Model | 4334425752 | | Number of Items | 1 | | Number of Pins | 2 | | Other Special Features of the Product | Low Voltage | | Part Number | 4334425752 | | Recommended Uses For Product | For powering keyboard, guitar effect pedals | | Special Feature | Low Voltage | | UPC | 709818797316 | | Unit Count | 1 Count | ## Product Details - **Brand:** Mr.Power - **Cable Type:** Coaxial - **Compatible Devices:** PC - **Connector Type:** Male-to-male - **Special Feature:** Low Voltage ## Images ![Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal - Image 1](https://m.media-amazon.com/images/I/517h9+Ux-9L.jpg) ## Available Options This product comes in different **Number Of Items** options. ## 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 ### ⭐⭐⭐⭐⭐ Mr.Power Reverse Polarity Converter Cable *by D***. on August 2, 2026* Works perfectly ### ⭐⭐⭐⭐⭐ ESSENTIAL for tape recorder power unit *by J***J on October 19, 2023* 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! ### ⭐⭐⭐⭐⭐ Use a standard power supply with nonstandard electronics *by K***Z on February 4, 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! ## Frequently Bought Together - Mr.Power Reverse Polarity Converter Cable 5.5 X 2.1 for Keyboard Guitar Effect Pedal (1 pcs) - DSD TECH MagicConn SH-CP12A USB Type C PD to DC Power Cable(55x25)-12V --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.no/products/32425009-reverse-polarity-converter-cable-5-5-x-2-1-keyboard](https://www.desertcart.no/products/32425009-reverse-polarity-converter-cable-5-5-x-2-1-keyboard) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-10-03*