--- product_id: 56472872 title: "FeinTech ATG00101 Audio Ground Loop Isolator Filter Suppressor Noise 3.5 mm Jack Stereo Cable, Black" brand: "feintech" price: "€ 29.58" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.pt/products/56472872-feintech-atg00101-audio-ground-loop-isolator-filter-suppressor-noise-3 store_origin: PT region: Portugal --- # Stereo 3.5mm compatibility Eliminates hum & noise True galvanic isolation FeinTech ATG00101 Audio Ground Loop Isolator Filter Suppressor Noise 3.5 mm Jack Stereo Cable, Black **Brand:** feintech **Price:** € 29.58 **Availability:** ✅ In Stock ## Summary > 🔇 Cut the noise, keep the vibe — audio clarity redefined! ## Quick Answers - **What is this?** FeinTech ATG00101 Audio Ground Loop Isolator Filter Suppressor Noise 3.5 mm Jack Stereo Cable, Black by feintech - **How much does it cost?** € 29.58 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/56472872-feintech-atg00101-audio-ground-loop-isolator-filter-suppressor-noise-3) ## Best For - feintech enthusiasts ## Why This Product - Trusted feintech brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Discreet:** Small 6x2x2 cm design fits seamlessly into any setup without clutter. - • **Silence the Static:** Say goodbye to annoying hum and interference in your audio setup. - • **Pro-Grade Isolation:** True galvanic isolation ensures zero signal degradation for pristine audio. - • **Universal Audio Ally:** Works flawlessly with computers, TVs, car stereos, smartphones, and more. - • **Plug & Play Perfection:** No power or extra cables needed—just connect and enjoy crystal-clear sound. ## Overview The FeinTech ATG00101 Audio Ground Loop Isolator is a compact, no-power-needed device that eliminates hum and noise caused by ground loops in any 3.5mm stereo audio connection. Compatible with a wide range of devices including computers, TVs, car radios, and smartphones, it uses true galvanic isolation to preserve sound quality while removing interference, making it an essential upgrade for professional and audiophile setups. ## Description Product Description The ground loop isolator is used as an audio filter and eliminates hum and noise. Such noise often occurs in the connection of audio devices which are connected to the mains with earthing contact plugs, e.g. Computer and active boxes, TV and AV receiver, PC and monitor. Even for audio connections in vehicles, the mass-separating filter can eliminate unwanted noise. In the car, sound disturbances can occur when music is played from the smartphone and it is charged at the same time. The ATG00101 has a true galvanic isolation. It is connected anywhere with the supplied short audio cable (3.5 mm) jack between the two devices. Due to the compact dimensions of 60 x 20 x 20 mm, the filter is easy to stow away. Box Contains Ground loop noise isolator, cable with 2 x 3.5mm audio jack Review: Works very well - In testing, this completely eliminated noise from an external USB audio interface. Some testing was performed using a Siglent 200MHz oscilloscope and a Feeltech FY6800 signal generator. Natural transformer resonance is over 200KHz and the audio performance is pretty flat from 20Hz up to way beyond 40KHz, where some peaking starts to occur. Below 30Hz there is some evidence of non-linearity though it is, in fact, better than another unit I tested recently. Crosstalk was also very good, I could not measure any significant crosstalk at 1V in across the full frequency range. Square wave slew rate was exceptional. The output slew rate was better than 1V/us and although some ringing was evident, this was damped with a 1.2K load resistor. Since the ringing is essentially at the transformer resonant frequency it's way beyond the audio bandwidth anyway. Apart from some non-linearity below 30Hz, which is unlikely to be audible, I can't see any reason it would introduce colouration into the signal. Note that despite a review claiming this unit is not a stereo device, this is not correct. It does operate as a stereo isolator. Review: Amazing little product - We have a PC feeding our sound desk. The PC line out suddenly developed a nasty background white noise / hum which I initially thought might be a dying pc power supply or sound card. Didn’t think an earth loop would have appeared overnight although not beyond the possible at our venue. Anyway, before changing the sound card and PSU I thought I’d try this cheap little option and it got rid of the hum fantastically. Might be a sticking plaster for now but solves my immediate problem brilliantly. ## Features - Galvanically isolates the ground in audio connections, eliminating humming and sound interference - Suitable for all audio connections with 3.5 mm jack plug, e.g. Computer, TV, car radio, smartphone, active speakers, Bluetooth receiver, stereo system - Eliminates mass loops without degrading the sound, removes noise and hum - Is simply inserted between the devices and can be placed unobtrusively (size only 6 x 2 x 2 cm) - No power required, no additional connection cable needed (20 cm 3.5 mm audio cable is supplied) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B076JGVJGP | | Best Sellers Rank | 30 in Car Amplifier Noise Filters | | Brand | FeinTech | | Cable Type | AUX | | Colour | Black | | Compatible Devices | Computer, TV, Car Radio, Smartphone, Active Speakers, Bluetooth Receiver, Hi-Fi System | | Compatible Phone Models | Smartphone | | Connectivity Technology | audio cable | | Connector Gender | Male-to-Female | | Connector Type | 3.5mm3.5mm | | Customer Package Type | Sealed protective packaging | | Customer Reviews | 4.2 4.2 out of 5 stars (1,301) | | Frequency | 20000 Hz | | Global Trade Identification Number | 04026423932007 | | Included Components | Audio ground separator, connection cable 3.5 mm jack (20 cm) | | Indoor Outdoor Usage | Indoor | | Item Shape | Round | | Item Weight | 0.02 Kilograms | | Manufacturer | FeinTech | | Maximum Voltage | 1 Volts | | Model Name | ATG00101 | | Model Number | ATG00101 | | Number of Items | 1 | | Number of Pins | 3 | | Other Special Features of the Product | No power supply required | | Outer Material | Plastic | | Product Warranty | 2 Year Manufacturer Guarantee | | Recommended Uses For Product | Tv | | Specification Met | RoHS | | Unit Count | 1.0 count | ## Product Details - **Brand:** FeinTech - **Cable type:** AUX - **Compatible devices:** Computer, TV, Car Radio, Smartphone, Active Speakers, Bluetooth Receiver, Hi-Fi System - **Connector type:** 3.5mm3.5mm - **Special feature:** No power supply required ## Images ![FeinTech ATG00101 Audio Ground Loop Isolator Filter Suppressor Noise 3.5 mm Jack Stereo Cable, Black - Image 1](https://m.media-amazon.com/images/I/71XMAWMDYQL.jpg) ![FeinTech ATG00101 Audio Ground Loop Isolator Filter Suppressor Noise 3.5 mm Jack Stereo Cable, Black - Image 2](https://m.media-amazon.com/images/I/714G9jte9rL.jpg) ![FeinTech ATG00101 Audio Ground Loop Isolator Filter Suppressor Noise 3.5 mm Jack Stereo Cable, Black - Image 3](https://m.media-amazon.com/images/I/41UjMjnjdVL.jpg) ![FeinTech ATG00101 Audio Ground Loop Isolator Filter Suppressor Noise 3.5 mm Jack Stereo Cable, Black - Image 4](https://m.media-amazon.com/images/I/51UX-UktfUL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works very well *by A***O on 17 November 2021* In testing, this completely eliminated noise from an external USB audio interface. Some testing was performed using a Siglent 200MHz oscilloscope and a Feeltech FY6800 signal generator. Natural transformer resonance is over 200KHz and the audio performance is pretty flat from 20Hz up to way beyond 40KHz, where some peaking starts to occur. Below 30Hz there is some evidence of non-linearity though it is, in fact, better than another unit I tested recently. Crosstalk was also very good, I could not measure any significant crosstalk at 1V in across the full frequency range. Square wave slew rate was exceptional. The output slew rate was better than 1V/us and although some ringing was evident, this was damped with a 1.2K load resistor. Since the ringing is essentially at the transformer resonant frequency it's way beyond the audio bandwidth anyway. Apart from some non-linearity below 30Hz, which is unlikely to be audible, I can't see any reason it would introduce colouration into the signal. Note that despite a review claiming this unit is not a stereo device, this is not correct. It does operate as a stereo isolator. ### ⭐⭐⭐⭐⭐ Amazing little product *by S***W on 30 December 2024* We have a PC feeding our sound desk. The PC line out suddenly developed a nasty background white noise / hum which I initially thought might be a dying pc power supply or sound card. Didn’t think an earth loop would have appeared overnight although not beyond the possible at our venue. Anyway, before changing the sound card and PSU I thought I’d try this cheap little option and it got rid of the hum fantastically. Might be a sticking plaster for now but solves my immediate problem brilliantly. ### ⭐⭐⭐⭐ Much improved sound quality *by F***S on 14 May 2021* Markly reduced the noise from my computer speakers but not entirely. However it is acceptable to how bad it was originally. ## Frequently Bought Together - FeinTech ATG00101 Audio Ground Loop Isolator Filter Suppressor Noise 3.5 mm Jack Stereo Cable, Black - BESIGN Ground Loop Noise Isolator, Ground Loop Buzzing Noise Filter, Ground Loop Buzzing Noise Elimination for Car Audio and Home Stereo System with 3.5mm Audio Cable --- ## 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.pt/products/56472872-feintech-atg00101-audio-ground-loop-isolator-filter-suppressor-noise-3](https://www.desertcart.pt/products/56472872-feintech-atg00101-audio-ground-loop-isolator-filter-suppressor-noise-3) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-23*