Customer Ratings & Reviews

This product does exactly what I bought it for. Good purchase.

My car audio system was making loud buzzing noise, after bought this and fix the ground loop issue. Awesome product, works as designed too.

Garbage don’t waste your money. Much better products out there that will actually work.

Mostly reduces the hum between an old Dual turntable with a 5 pin din connector adapter and old receiver. Not sure what to do with the two brown ground (?) wires...no instuctions.

It is a great item, very very useful. The ground loop reduced my motor noise in my car.

Does its job. Engine noise was reduced when installed.

Perfect! Just what I was looking for!! Recommend!!

Had this installed with my son's radio. Great product.

After I installed my aftermarket stereo with Apple CarPlay, I got this constant resistor whine. This device actually eliminated all the resistor whine and allowed me to enjoy my sound system without getting an aftermarket amplifier.

Great product but didn't solve my problem so I returned it. Bought to help troubleshoot my car audio problems but ended up having a different problem

I bought this to eliminate a very loud hum I was getting during playback from my computer based jukebox and my stereo. Between it and a UPS/Voltage Regulator, the background noise is gone!

It didn't do anything on my system so I guess my issue is somewhere else, it can pick up alternator whine noise so be carefull where you place it.

Bought this for the system in my suv, work as it should have

After talking with the car stereo associate, I purchased thi item to solve alternator noise. The noise was still there after installation. GLI may work for some applications, not mine.

Had a buzzing sound when I played a game on my PC. Hooked this up to the out cord to my surround sound sub wolf box and boom buzz sound gone worked like a charm and this is a nic cheap fix get this thing for your car as well if you have issues with your car audio as well

Doses what it is suppose to. Eliminates the hum in my Home Theater System when I connect my PC to it for viewing stored home movies. The only con is the directions need to be better.

useful if needed but pricey compared to other online retailers. good to have bc its in stock, don't have to wait for it to arrive. decent quality with warranty.

Does what its supposed to if hooked up right. RCAs from your stereo to this unit then unit to your amp and as for the ground wire i just taped mine off

Useful to eliminate a 60hz hum in my speakers from my computer. Just make sure that the hum is caused by a grounding error and not due to high gain, which introduced noise in the sound.

Got ground loops that need isolating? This is the solution for you! It uses sorcery and science to isolate and eliminate your ground loops like a fox! It's like my grandmother always said, if you don't isolate your ground loops, you're out of the loop!