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

Works perfectly, completely removed the buzzing noise. Small, simple, and very effective.

Ever since starting to use an Amazon Alexa car device for hand-free phone calls, I've been putting up with a high-pitched whine from my car's speakers. The whine would go up in pitch when accelerating, drop when decelerating, and isn't present when using the radio. Digging around on the internet, I found that it's caused by ground loop noise; ground loop is created b/c the device has to be connected both to the Aux input and the "cigarette lighter" adapter for power in order to work, thereby double grounding it.Bought this device, plugged it into the aux port, plugged the Alexa's aux cord into the device, voila! no more pesky noise.

Instantly removed the annoying buzzing noise from my car audio system. Super easy to use—just plug it in and the sound is clean. Great for both car and home stereo setups. Highly recommend if you're dealing with ground loop noise! 😍😍😍

Reduce some of the noise but not all

This isolator immediately killed the right side of my audio. I’m trying to install surround sound and remove the buzzing. While it did eliminate the ground loop buzzing, it completely ruined my stereo signal. Only the left side speakers and center worked — the right side was completely silent. The connectivity from the cables were also really poor.I tested it with multiple cables and devices, and the issue always came back to this isolator. It’s poorly made and clearly not balanced for proper stereo output.If you’re running a proper setup and care about sound quality, avoid this.

Just began feeding my fire scanner radio on-line and noticed a background hum. Began troubleshooting and then heard about the Smof Ground Loop isolator. Ordered it ... received it ... installed it ... HUM GONE. I then ordered another one and installed it in my recording studio which was always experiencing a hum between the sound mixing board and the sound card. As you can see from the photo, troubleshooting each and every piece of equipment would have taken quite some time. Installed the Smof and the darn thing worked!!! I'm now 'humless.'

best product ive bought this year. and cheap.... fixed everything i had issues with my douk audio (and sub aux out too.)zero noise. sound quality hasnt been altered, and without hiss and buzz, its pristine.so stoked

It works I suppose. I didn't have a lot of noise. It was only noticeable when I had the volume turned up and nothing playing. This cut the noise down pretty well but it also killed all bass and turned it into a muddy mess. I never REALLY understood the phrase "muddy bass" until this thing. It legitimately makes it sound like I'm listening to a speaker that is face down in mud.Unless your static is REALLY bad I wouldn't bother with this thing. Ruins the quality too much to be worth it. I'd rather keep turning my volume back down when nothing is playing.