--- product_id: 734180232 title: "iFI Audio iDefender + AA Hum Noise Reduction Accessory" price: "€ 113.10" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.it/products/734180232-ifi-audio-idefender-aa-hum-noise-reduction-accessory store_origin: IT region: Italy --- # 10x capacitor capacity for superior noise filtering Ground loop isolation eliminates hum/buzz noise USB Type-A connector for universal PC compatibility iFI Audio iDefender + AA Hum Noise Reduction Accessory **Price:** € 113.10 **Availability:** ✅ In Stock ## Summary > 🔊 Silence the buzz, amplify your vibe. ## Quick Answers - **What is this?** iFI Audio iDefender + AA Hum Noise Reduction Accessory - **How much does it cost?** € 113.10 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/734180232-ifi-audio-idefender-aa-hum-noise-reduction-accessory) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Enhanced Audio Clarity:** Lower noise floor boosts resolution and dynamic contrast for pristine sound quality. - • **Universal USB Compatibility:** Works seamlessly with laptops, desktops, and bus-powered USB DACs. - • **Compact & Lightweight Design:** At just 6.6 grams and sleek metallic finish, it fits effortlessly into any setup. - • **Plug & Play Noise Elimination:** Simply connect to your PC USB port and experience instant hum and buzz noise eradication. - • **Trusted Japanese Domestic Model:** Officially certified for quality and reliability in Japan’s demanding audio market. ## Overview The iFI audio iDefender+AA is a compact USB accessory designed to eliminate ground loop hum and buzz noise from PC audio sources. Featuring a 10x increased capacitor capacity for superior noise filtering, it lowers the system noise floor to enhance audio resolution and dynamic contrast. Compatible with laptops, desktops, and bus-powered USB DACs, this sleek metallic device plugs directly into USB Type-A ports, delivering cleaner, clearer sound with minimal setup. ## Description Are you suffer from ham or buzzy noise? Using multiple ground/ground terminals within the audio chain means ground/ground points are separated.These multiple ground/ground points cause ground loop issues.This creates unnecessary noise, buzz, and struggle chains.iDefender+ provides a simple and effective solution. When you connect iDefender+ to the USB port of your source device such as PC, iDefender+ will detect whether there is a ground loop issue.By cutting the ground "intelligent" the source equipment, it will isolate the ground loop, eradicate hum/buzz noise, but also lower the noise floor of the system, improving resolution and dynamic contrast. If your source device or device connected to iDefender+ operates self-power, simply clip the iDefender+ in between to get the job done.For bus power operation, it is effective by supplying power from the USB-C port on the side. Do you use iDefender+ USB-DAC that runs on USB bus power instead of external power or internal batteries? In that case, power from the USB-C port on the side of the iDefender+.Block power/ground from source devices and instead provide "clean" power from USB-C port to USB-DACUsing high quality low-noise power adapters, such as iFi iPower 5V, greatly improve the performance of USB-DAC. We upgraded the circuit from the first iDefender 3.0. Low ESR tantal capacitors are added to improve the filter performance of input and output.The capacitor capacity for the filter has been increased by 10 times. The iDefender+ is available in 3 versions with USB-C port/plug. USB-A -> USB-A (AA) USB-C -> USB-A (CA) USB-C -> USB-C (CC) Beat buzz/humm noise from any USB connection with iDefender+. A global leader in high performance audio iFi audio's product line covers digital and analog, from portable, stationary audio and accessories and even all in one system.iFi products can help you enjoy listening to music in every application and meet your trust.Innovative design and exclusive technology capture musical energy, scale, detail allows you to transmit music while keeping your mind and soul. iFi audio's products are known for their high sound quality, unique features and innovative technology.We offer a wide range of products including portable options, using unique technology, high-quality materials. iFi audio's products use high quality components and advanced circuitry to ensure clean and accurate sound playback.iFi audio,has a professional team of experienced engineers and designers and is passionate about producing the best audio products. ## Features - Simply connect the iDefender+ to the USB port on your PC or other source device - Not only does it block ground loops and eradicate ham/buzz noise, but it also lowers the noise floor in the system for improved resolution and dynamic contrast - Increased capacitor capacity for filters by 10 times - Also effective for bus-powered USB-DAC ## Technical Specifications | Specification | Value | |---------------|-------| | Amazon Bestseller | #36,210 in Musical Instruments (See Top 100 in Musical Instruments) #320 in Stage Speaker Accessories #200,408 in Electronics Accessories & Supplies | | Asin | B0849J33T9 | | Brand | iFi | | Color | orange | | Compatible Devices | Laptop, PC | | Connector Type | USB Type A | | Customer Reviews | 3.9 3.9 out of 5 stars (682) 3.9 out of 5 stars | | Finish | Metallic | | Input Voltage | 5 Volts | | Item Dimensions | 12.7 x 9.1 x 1.5 cm | | Item Weight | 6.6 Grams | | Manufacturer | Abbingdon Music Research | | Mfr Part Number | iDef+ | | Model Number | 0306037-AA | | Nominal Power | 5 Watts | | Number Of Items | 1 | | Number Of Ports | 4 | | Package Quantity | 1 | | Power Plug Type | No Plug | | Specific Uses For Product | PC, Laptop | | Unit Count | 1.0 Count | | Warranty Type | Limited | ## Product Details - **コネクタタイプ:** USB Type-A - **商品寸法 (長さx幅x高さ):** 12.7 x 9.1 x 1.5 cm - **商品用途・使用方法:** PC、ノートパソコン。 - **対応デバイス:** ノートパソコン, パソコン - **色:** オレンジ ## Images ![iFI Audio iDefender + AA Hum Noise Reduction Accessory - Image 1](https://m.media-amazon.com/images/I/61Tj-80B71L.jpg) ![iFI Audio iDefender + AA Hum Noise Reduction Accessory - Image 2](https://m.media-amazon.com/images/I/71vpgTPoDvL.jpg) ![iFI Audio iDefender + AA Hum Noise Reduction Accessory - Image 3](https://m.media-amazon.com/images/I/81cyRr6B-pL.jpg) ![iFI Audio iDefender + AA Hum Noise Reduction Accessory - Image 4](https://m.media-amazon.com/images/I/91ap92c2teL.jpg) ![iFI Audio iDefender + AA Hum Noise Reduction Accessory - Image 5](https://m.media-amazon.com/images/I/6192dvxrpuL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 明らかにS/N比が上がる気がする *by on Reviewed in Japan August 13, 2024* 実際に数値で試したわけではないので、すべて体感ですけども、明らかに変わります。自分の場合は、高音の伸びが素晴らしく良くなった。過去のiDefenderも所有していましたが、これよりもずいぶんと良くなりましたね。もちろん人によって「音が変わる」良し悪しは違います。私の場合は「良」の寄りの変化でしたので、これ以上は突っ込まないことにします。…ぶっちゃけ、あまりよくない適当な付属品のUSBケーブルであってもそれなりに良くなるんですよ。驚くべき性能です。【現在の環境】ハイミドルPC（i9-12900k + RTX3080ti + DDR4 96GB) -> iDefender+AA + AIM UA3-R010 -> Sony TA-ZH1ES -> AKG K812【過去の環境】ハイミドルPC（i9-12900k + RTX3080ti + DDR4 96GB) -> iDefender（旧） + FURUTECH GT2 -> Sony TA-ZH1ES -> AKG K812 ### ⭐⭐⭐⭐⭐ 低域の解像度が特に向上 *by on Reviewed in Japan February 28, 2024* パソコンのUSB出力と、マークレビンソンの5909の間に挿入して使用、低域の解像度が向上し、聞こえていなった音が聞こえるようになりました。素晴らしいコスパの製品だと思います。 ### ⭐⭐⭐⭐ 無駄な味付けがなくていい *by on Reviewed in Japan September 14, 2024* 私の視聴環境ではPCからUSBケーブルでDACに繋げています。パソコンの電源やDAC側の電源ケーブルを変更しオーディオグレードの電源タップを使用してノイズ対策し、前のisilencerなどを使用しています。実際ここまでしてたらハムノイズなど聞こえませんが気休め程度で購入。ですが、結構影響があるようで音場の広い音質になりました。無駄に音質が変わったりしないし主に音場の向上だけでこれいいなとなりました。無駄に音質が変わるものあるけどホントにノイズだけ抑えてる？って思ってしまう物もしばしば。これは良い買い物ではないでしょうか。 ## 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.it/products/734180232-ifi-audio-idefender-aa-hum-noise-reduction-accessory](https://www.desertcart.it/products/734180232-ifi-audio-idefender-aa-hum-noise-reduction-accessory) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-11-10*