Smof Upgraded Ground Loop Noise Isolator, Noise Filter for Car Audio/Home Stereo System (Eliminate The Buzzing Noise Completely) with 3.5mm Audio Cable, Black

At first, I gave a very low-star review because the device didn’t reduce any noise—in fact, it made it worse. But immediately afterward, the vendor reached out, offered a refund, and, more importantly, showed genuine interest in understanding what went wrong. I value excellent service even more than excellent products.

Though I had to buy the expensive ones, BUT NO.. This one does the job... Using a TV as a second monitor OFF a Surface Laptop. Ass soon as i plug the HDMI, noise came in, and then digital clipping constantly. THIS LITTLE GUY GOT RID OF ALL OF IT..

Why did you pick this product vs others?:I was searching for a solution to a slight hum being injected into my scanner/computer audio loop.The product works great at removing this hum, at least to a sub-audio level.Good price - good value.

I bought two of these units to put in line between two audio sources feeding a Y-cable to my headphones. Previously, there was some very annoying and erratic static. It was completely eliminated by these devices. I'll give it a fifth star after I have it in use for a while.

Worked well in my car, really helped the noise coming from my aux from phone to the car radio.

I've been using this for almost three years, and it hasn't let me down yet. It gets rid of buzzing, and does it reliably. Add in its cheap price, and I am fully satisfied.

I had to rewrite this review as I did some further diagnostics to find it was not my pc that was causing the noise it is from another part in the setup I am utilizing. I cannot confirm at this time exactly if this product works as designed however I am still concerned that my system did not get any audio at all after plugging in the isolator and the 3.5mm into the isolator. I even tried flipping the device so that the 3.5mm cables plugged into the opposite sides to no success. this device may be best if you are using a phone or another system maybe microphones even.

I was getting a constant buzzing noise in my speakers whenever my PC and audio equipment were connected. Plugged this little ground loop isolator in, and the noise disappeared immediately. Super easy to use—just plug and play. It’s compact, does exactly what it’s supposed to, and saved me a ton of frustration. Highly recommend if you’re dealing with annoying hum or interference in your audio setup.