--- product_id: 193231466 title: "iFi iDefender+ External USB Audio Ground Loop Eliminator (Type A - A)" brand: "ifi" price: "€ 143.30" currency: EUR in_stock: true reviews_count: 10 category: "I Fi" url: https://www.desertcart.at/products/193231466-ifi-idefender-external-usb-audio-ground-loop-eliminator-type store_origin: AT region: Austria --- # Maintains USB 3.0 high-speed data Eliminates ground loop hum Supports external 5V clean power input iFi iDefender+ External USB Audio Ground Loop Eliminator (Type A - A) **Brand:** ifi **Price:** € 143.30 **Availability:** ✅ In Stock ## Summary > 🔊 Cut the noise, keep the vibe — your audio’s new best friend. ## Quick Answers - **What is this?** iFi iDefender+ External USB Audio Ground Loop Eliminator (Type A - A) by ifi - **How much does it cost?** € 143.30 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/193231466-ifi-idefender-external-usb-audio-ground-loop-eliminator-type) ## Best For - ifi enthusiasts ## Why This Product - Trusted ifi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power Up Clean:** Optional USB-C port for clean 5V DC power input, reducing noise even further with compatible supplies. - • **Silence the Buzz:** Eradicates annoying ground loop hum for pristine audio clarity at home or on the go. - • **Plug & Play Peace:** Simple Type A to A USB connection—no drivers, no fuss, just instant noise elimination. - • **High-Speed Harmony:** Retains USB 3.0 data transfer speeds ensuring zero compromise on audio signal integrity. - • **Pro-Grade Audio Upgrade:** Lowers noise floor and boosts dynamic contrast, delivering warmer, richer sound you’ll actually hear. ## Overview The iFi iDefender+ is a compact USB audio ground loop eliminator designed to silence humming and buzzing caused by multiple grounded devices in your audio chain. Compatible with USB Type A connections, it preserves USB 3.0 high-speed data transfer while offering an optional USB-C port for clean 5V power input. Ideal for professionals and audiophiles seeking clearer, warmer sound by reducing system noise floor and interference. ## Description iFi iDefender+ External USB Audio Ground Loop Eliminator (Type A - A): desertcart.co.uk: Electronics & Photo Review: It does the job but check you really need it ... - When I moved house and setup up my guitar and synth bits in the new place, I was treated to the most horrendous ground hum, staticy, zuzzing noise through the monitor speakers from the USB audio interface attached to my desktop DAW system. I never had this problem at the old place aside from a very small hum which a small Behringer Hum Destroyer/Suppressor fixed. This little iDefender fella removed most of the noise, leaving only a very faint electrical connection sound in the distance if you put your ear to the speaker and which you'd easily forget about when audio was coming through. So, it did the job it was supposed to do but it is quite expensive at £60. The reason I say "check you really need it" is because I did little more investigation and found a better and cheaper solution for my setup. As I had never had a real problem before, my Steinberg audio interface had always been connected to the Mackie monitors via mono 1/4" cables. Apparently, these are called Unbalanced. The Steinberg and the Mackies both support TRS (stereo) cables otherwise known as Balanced. No idea what all that means but professional stuff all generally supports Balanced. I bought a pair of TRS audio cables from desertcart (RUXELY 6.35mm TRS Instrument Cable) for a grand total of £12 and voilà. ALL the noise vanished. Nothing evident even with your ear up against the speaker. Didn't even need the Behringer. Problem solved. iDefender not required. iDefender returned. Balanced is clearly the way to go and I probably should have known this but I'd never had this problem before in the previous 15 years with all sorts of kit and different interfaces. Balanced TRS cables on everything from now on. That said, if that doesn't do it in your situation then the iDefender will likely get the job done. Review: Did not help my audio hum issue - It was quiet pricey for such a simple solution (ground loop noise elimination) but it did not work sadly for me. Will not recommend for someone who has an audio interface like Focusrite Scarlett 2i2 taking power via USB. ## Features - ✅ REMOVE GROUND LOOPS - Silence humming / buzzing caused by unwanted ground loops from your audio chain at home or in your car sound system. Available in 3 connection versions: USB A to to A, USB C to C, USB C to A. - ✅ DEFEND AGAINST TOO MANY EARTHS - Disconnects the USB power from the PC, laptop, or other USB music source to eliminate multiple earths which cause noise interference - ✅ IMPROVE SOUND QUALITY - Significantly reduces system noise floor and increases dynamic contrast, warmth and resolution in your music with a measurable difference. Retains USB 3.0 high speed data transfer technology for optimal signal transmission - ✅ ROOM FOR MORE SOLUTIONS - Use an iPower 5V power supply (sold separately) into the side USB C port for clean DC power on USB powered devices. Not to worry, other 5V power supplies used will benefit from additional noise filtration. - ✅ PLEASE READ ✅ : The iDefender+ is only a solution for removing ground loops within your system which occurs from having too many grounded devices in your audio chain. If you are unsure if you have a ground loop, please visit our website and contact our support team who will assist you. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0849J33T9 | | Best Sellers Rank | 9,702 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 200 in Audio & Video Adapters | | Brand Name | iFi | | Colour | orange | | Compatible Devices | Laptop, Personal computer | | Connector Type | USB Type A | | Country of Origin | China | | Current Rating | 1 Amps | | Customer Reviews | 3.8 3.8 out of 5 stars (661) | | Input Voltage | 5 Volts | | Item Dimensions | 12.7 x 9.1 x 1.5 centimetres | | Item Weight | 6.6 Grams | | Manufacturer | Abbingdon Music Research | | Model Number | iDef+ | | Nominal Power | 5 Watts | | Number of Items | 1 | | Number of Ports | 4 | | Package Quantity | 1 | | Power Plug Type | No Plug | | Product Finish Type | Metallic | | Specific Uses For Product | PC, Laptop | | Unit Count | 1.0 count | | Warranty Type | Limited | ## Product Details - **Colour:** orange - **Compatible devices:** Laptop, Personal computer - **Connector type:** USB Type A - **Item dimensions L x W x H:** 12.7 x 9.1 x 1.5 centimetres - **Specific uses for product:** PC, Laptop ## Images ![iFi iDefender+ External USB Audio Ground Loop Eliminator (Type A - A) - Image 1](https://m.media-amazon.com/images/I/61Tj-80B71L.jpg) ## Questions & Answers **Q: I understand it doesn't come with the power supply, but does it come with an adaptor cable to connect a power supply (usb c male to dc female)?** A: No, the one I received literally came with the unit in a box. I had to buy a seperate usb-c lead and used an old phone charger plug(the type with a detachable USB lead). I have it plugged into a power conditioner so I'm not too concerned about 'dirty' power coming through the lead **Q: I get a high pitched buzz from my numark c3usb mixer when one or both usbs is connected to pc. it stops if i pull them out. will this help?** A: i got a buzz through my mixer when having my digital piano connected via usb. placing this between the pc and the mixer (with an extra 5v input to power the mixer) removed the buzz entirely. **Q: Will any power supply work with this? i am in uk so the branded one seems wrong for me. could it work with a usbc cable straight from wall power?** A: Hi, Thanks for your message. You can use any 5v power supply with this, but we recommend the iPower for an introduction of clean power, the one on Amazon is shipped with multiple adaptors so it will have UK pin for you,. It could work with a USB C cable with a charging plug. Thanks iFi audio **Q: Does this take away buzzing sound for PS4 headset?** A: I don’t think so, if it’s Bluetooth there is no electric ground to reduce If it’s with the back of the controller, there is no way étoiles plug it ## Customer Reviews ### ⭐⭐⭐⭐⭐ It does the job but check you really need it ... *by A***R on 10 April 2024* When I moved house and setup up my guitar and synth bits in the new place, I was treated to the most horrendous ground hum, staticy, zuzzing noise through the monitor speakers from the USB audio interface attached to my desktop DAW system. I never had this problem at the old place aside from a very small hum which a small Behringer Hum Destroyer/Suppressor fixed. This little iDefender fella removed most of the noise, leaving only a very faint electrical connection sound in the distance if you put your ear to the speaker and which you'd easily forget about when audio was coming through. So, it did the job it was supposed to do but it is quite expensive at £60. The reason I say "check you really need it" is because I did little more investigation and found a better and cheaper solution for my setup. As I had never had a real problem before, my Steinberg audio interface had always been connected to the Mackie monitors via mono 1/4" cables. Apparently, these are called Unbalanced. The Steinberg and the Mackies both support TRS (stereo) cables otherwise known as Balanced. No idea what all that means but professional stuff all generally supports Balanced. I bought a pair of TRS audio cables from Amazon (RUXELY 6.35mm TRS Instrument Cable) for a grand total of £12 and voilà. ALL the noise vanished. Nothing evident even with your ear up against the speaker. Didn't even need the Behringer. Problem solved. iDefender not required. iDefender returned. Balanced is clearly the way to go and I probably should have known this but I'd never had this problem before in the previous 15 years with all sorts of kit and different interfaces. Balanced TRS cables on everything from now on. That said, if that doesn't do it in your situation then the iDefender will likely get the job done. ### ⭐ Did not help my audio hum issue *by S***S on 5 September 2022* It was quiet pricey for such a simple solution (ground loop noise elimination) but it did not work sadly for me. Will not recommend for someone who has an audio interface like Focusrite Scarlett 2i2 taking power via USB. ### ⭐⭐⭐⭐⭐ Expensive but works for a specific problem *by D***R on 15 December 2021* Lots of different opinions in the reviews but the basic fact is that this little device is made to fix one specific problem, and it fixes it very well. If you have a ground loop issue that is causing your audio interface to hum and crackle - this will fix it. Yes, it's very expensive for what you get. Yes, you need to supply your own external USB power supply. But that pales into insignificance, because it just works. I was getting horrendous interference, humming, call it whatever you like, when I had my Scarlett 8i6 plugged into my PC's USB port. With this, it's absolutely silent. I can turn my amp up to max volume and there isn't a hint of noise. So much so that I keep having to check that it's still powered on. Playing my synths through the audio interface is now crystal clear, the best they've ever sounded. I still can't quite believe it's as good as it is. So like I say. For this one, very specific problem, this little device is fabulous. But if your problem isn't a ground loop, then it ain't gonna do a thing. ## Frequently Bought Together - iFi iDefender+ USB Audio Ground Loop Eliminator (Type A > A) 5V - iFi SilentPower iPower2 - Low Noise DC Power Supply - Upgrade Your Audio/Video/Electronics (5V / 2.5A)… --- ## 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.at/products/193231466-ifi-idefender-external-usb-audio-ground-loop-eliminator-type](https://www.desertcart.at/products/193231466-ifi-idefender-external-usb-audio-ground-loop-eliminator-type) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-23*