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

My GTi is old - it's model year seems to have been the last one prior to the widespread introduction of usb ports as a standard piece of kit for new cars by VW. It has several buttons for satellite radio and a DVD-based navigation system. Bluetooth audio was moving from a rumor to reality but still a few years from being available as a feature. So no easy wireless audio existed for me in this car - only an aftermarked aux jack that I had been plugging into via Apple's Lightning to 3.5mm adapter. I tried using a Bluetooth dongle, which brought brief joy followed by the realization that it would need frequent charging, which invariably brought on the eerie, disembodied, hissing menace of the Audio Ground Loop. Efffff.BUT - I love my GTi; it's paid off, cheap to insure, and driving it still puts a smile on my face. Two weeks ago I did a bit of research on reliable isolation devices, got overwhelmed by the crushing weight of paid-for, AI-faked, ludicrously off-topic, and real reviews, and decided to just buy the most popular one on the big A.Thing works great. No degradation in quality (to my somewhat practiced ears), nor any decrease in volume. Just plugged my bluetooth receiver dongle into the cigarette lighter outlet/usb charger, connected this thing's built-in 3.5mm male cord to the dongle's output, then ran a short 3,5mm cord from this isolator to the aux jack. Voilà. Now that setup sits, out of eyesight, in the emergency-brake-lever area to the right of the driver. When I start the car, on comes the bluetooth. With this isolator in place, I have seamless, interference-free bluetooth audio from my iphone without ever having to plug the phone in to anything. Wonderful. Writing this review was harder than setting it all up.

My laptop is currently connected to a decent set of Klipsch speakers that have analog inputs. Both this laptop and prior laptops when connected would exhibit a fair amount of cross talk from their headphone out ports. Adding an external sound card did not fix the issue either (to my surprise). However when I added the noise filter the hisses and pops disappeared immediately with no degradation to the sound quality at all. I wish I had made this purchase years ago as I can now use the laptop to listen to audio the same as my desktop on my external speakers with no issues now. Thank you for a great product!!

I play drums and use a kind of complicated setup for my monitor rig on stage. I use an iPad for a metronome while I'm playing and connect the monitoring mix from a Behringer P16. I connected them with a tiny stereo mixer to my headphones. I ran into a problem with a buzz coming from the iPad signal. I tried some different power supplies and different cables to fix the problem, but they didn't work. I plugged this in and the problem was solved instantly.I've only used it on a few gigs, but it does exactly what I expected it to do resolving my noise issue with ease. I would definitely recommend this for someone with a similar issue.

I bought a new UGREEN shielded aux cable to use with my Sony WH-1000 XM4 headphones for my Rodecaster Duo, but I noticed a problem - there was this awful static noise. I did some research and found online that something called a "ground loop noise isolator" should fix it, so I picked this one up from Amazon and tried it out.Sure enough - it works! I got this for $8.99 and honestly I'd say it was worth it.In a separate case, I noticed an issue when using my Samsung J Series sound bar in my living room with my Dell Latitude laptop. Sometimes I would hear this awful loud buzzing noise, and I especially noticed it if the aux cable was plugged only into the soundbar and I touched the other (unplugged) end with my hand. This also happened while the laptop was connected to the soundbar at some point. Realizing that I was probably making ground with the connection, I tried to use this product for my laptop and the awful buzzing noise went away.Hopefully this review helps!Extra Information:As for why I wanted to connect this laptop to my living room sound bar, it's because I use it as a server running Rocky Linux and I set up a cron job to play a custom alarm sound every morning at 8:00 AM (cronjob syntax is 0 8 * * *) using cvlc (CLI VLC Media Player) that I created, which counts down from 20, then counts down from 10, and then fades into an extremely loud air raid siren. My reason for doing this is because I sometimes fight with myself to get up in the morning, especially if I stayed up late, so hopefully this will help me get up sooner. I'm going to buy a second one of these so I can have one for my Rodecaster Duo and one for my Samsung J-Series soundbar that's connected to my Dell Latitude 7400 laptop.

Didn’t eliminate the problem entirely but it helped. Good value for the money.

Why did you pick this product vs others?:I plug my Nintendo Switch into my monitor and connect the monitor audio out to my PC so I can have Switch audio on my PC. There was always noise from the monitor audio even when my Switch is off. This device completely solved the issue for me.

I had a fairly high noise floor level coming through my amplified headphones hooked to a long cable run. This device lowered the noise floor without compromising the sound quality to the point that I can't hear any hum at my normal listening level - before installing it, I could hear it.