BESIGN Ground Loop Noise Isolator for Car Audio/Home Stereo System with 3.5mm Audio Cable

I bought this noise loop isolator to fix the static/humming sound in my headset, and it actually worked right away. Before using it, I had constant static and buzzing, especially when connected to my PC. As soon as I plugged this in, the noise was gone. Audio sounds clean now with no interference. Super easy to set up — just plug it in and it works. No extra settings or software needed. Build quality feels solid for the price, and it’s small enough to not get in the way. If you’re dealing with annoying static or ground loop noise, this is definitely worth it. Fixed my problem instantly.

I installed an iPod Nano (1G) dock in my truck 20+ years ago. I wired the dock directly to the cigarette lighter circuit (it was a 12V automotive dock. This worked fine with my Blaupunkt CD player, which had rear RCA inputs. I replaced that head unit with a cheapie Jensen Bluetooth deck, which has a front headphone jack. With this (much cheaper) head unit there was a high pitched dirty wail on the AUX input, which was very noticeable when the volume is turned up. This little noise isolator completely eliminated that noise. Gone. I was skeptical that this could even work, and then when reading the directions I also realized it was supposed to be hooked up opposite of my setup (male to stereo female to ipod). So I figured it wouldn't work well or at all. WRONG. The noise is completely gone, and now I don't have to pull the dash apart again to wire in a power filter. 100% recommend this, it saved me probably 3 hours of work in a hot car with no AC in the NC springtime. Highly recommend.

I recently purchased the UGREEN USB Audio Adapter to solve an issue I was having with noise in my docked computer speakers setup for my MacBook Pro. This little device worked like a charm and completely eliminated the annoying static and interference that was plaguing my sound system. Instant Noise Reduction The main reason I bought this adapter was to address the persistent noise that I would hear through my speakers when my MacBook was docked. It didn’t matter what I was doing—whether listening to music or joining a Zoom call—the interference was always present. As soon as I connected the UGREEN adapter, the difference was immediate. The noise disappeared completely, leaving me with crisp, clean sound. Easy Setup and Plug-and-Play The setup couldn’t have been easier. It’s truly plug-and-play—just plug it into the USB port, connect the speakers or headphones, and you’re good to go. There were no drivers to install or any complicated setup process. Within seconds, the audio quality improved dramatically. This was a simple, effective solution to a frustrating problem. Compact and Convenient Design The adapter itself is small and sleek, which is great because it doesn’t add any bulk to my setup. It’s easy to toss in a bag if I need to move around, and its design feels durable. Despite its compact size, it packs a punch in terms of performance. Great for Multiple Devices While I mainly use it with my MacBook Pro, I’ve also tested the adapter on other devices, including a Windows laptop and a desktop, and it worked just as effectively. The versatility of this adapter is a bonus, as it can solve audio issues across various platforms. Affordable and Effective Solution Given its affordable price point, the UGREEN USB Audio Adapter is an excellent value for what it offers. If you’re dealing with audio issues related to interference or static in your speakers, this is a quick and reliable fix without breaking the bank. Final Thoughts Overall, I’m extremely pleased with this purchase. The UGREEN USB Audio Adapter solved my noise issue perfectly, and the sound quality has been significantly improved on my docked MacBook Pro setup. It’s a must-have for anyone experiencing similar problems with audio interference. Highly recommended!

This thing does exactly what it says it does. The fat little section has an inductor that creates the magnetic field that makes sure when current (sound in this case) flows through it, it is normalized and doesn't have any potential difference (which causes the hum we all hate). It's cheap and works on the 3.5MM input that I plugged it into and no matter how much power I throw at it now, there is no more hum. A good buy and I recommend. Pro-tip: Where do I put this thing in the sequence? The age old question of before or after that amp??? Well, conventional wisdom usually says add this inline as close to the amp as possible between the head (stereo) and amp. In other words, put this on the input side of the amp. Stereo --> Isolator --> Amp --> Speakers. This works in the vast majority of cases. There are some instances where there might be components after the amp besides the speakers, perhaps some kind of Bluetooth adapter, or game console, or something. This situation is more rare but in that case you'd put an isolator after the amp (out put side) but as close to the speakers as possible so Stereo --> Amp --> Component X ---> Isolator --> Speakers. There is also a third scenario where you put an isolator before the amp AND after the amp but before the speakers because you are getting two kinds of issues like potential current differences from a bad ground on the stereo feeding into the amp (corrected with the input side isolator) and then a shielding problem on the way to the speakers or another component that is leaking on to the line with a bad ground or the like (corrected with the output side isolator closest to the speakers). Why not just add one single isolator as close to the speakers as possible to correct it all? I'm glad you asked. This is because unless you get super high quality and usually powered isolators, you can't expect miracles and the potential difference might get so high that one isolator just isn't enough to correct it all so you correct it one step at a time after each component that is causing an issue. Bottom-line: One isolator on the input side of the amp or right before the speakers is usually enough and this thing works great for that.

It made the audio going into my headphones extremely quiet, though it did contribute to fixing the problem I had with ground loop noise.

Easy plug-and-play, and it does an excellent job of removing noise interference. Volume does decrease a little, but it's an expected trade-off for no unwanted humming

It works. So I'm using this between headphones and an old amp. The amp generates a fair amount of ac hum that was becoming annoying. This little device has cut the hum way down and even helped with the popping I get when the hvac kicks on and off. But unfortunately it also lowers the overall volume, so I have to increase my source volume. It's not perfect, but does the job well enough to keep around. Overall I'm satisfied with it.

It worked to remove the ground loop noise or buzz from connecting one computers "speaker out" to another computers "line in or mic in" and turning on listen on the second computer. Easy to setup, use, cost was amazing.