Car Power Filter EMI Noise Ground Loop Isolator Suppressor for Auto Stereo Audio Radio Stereos Amplifier Amp Speaker Equalizer Subwoofer 12V

I bought a Car Power Filter EMI Noise Ground Loop Isolator to get rid of the annoying noises in my car stereo. I was having alternator noise and other noise come through before, but now it's just the tunes that get through. It worked a treat, just what I needed. I'm very happy with this product and I recommend it to anyone who has the same problem.

Fitted it inline with the power supply for my Yatour device that was fitted to my Audi RNS-D stereo system in the hope of removing alternator whine when driving. Sadly it made no difference at all so I returned it for a refund. I don't know that my 1 star review is fair as seemingly other people have had great results with these for similar applications, but for me it was no improvement. I guess it's always worth trying and send back for refund if it does not work....

Does the job... no more buzzing. The wires are small gauge but the insulation is crazy thick, I had trouble fitting them in to the wire stripper !!Would definitely recommend

Firstly, I must point out that I am not an audio technician. I'm just somebody who enjoys having a go at upgrading cars I own as much as possible. Having purchased a BMW e91 Touring M-Sport recently, I also purchased a replacement Android stereo to allow me to have DAB+, Google Maps, hands free calls etc. etc. Fitting the stereo was much easier than in previous cars, the (CANbus compatible) wiring was pre-configured to allow the steering wheel controls to work out of the box; not something I've come across with previous Japanese cars (Lexus and Toyota). Having fitted the stereo, everything worked as expected. However, I had lots of noise/interference through the speakers. Both DAB+ and FM as well as with nothing playing. It was a mixture of a high pitched tone that changed when accelerating and a lower pitched 'crackle' type of sound. Research suggested numerous potential causes, but most people pointed to alternator whine/ground issues as the culprit. Anyway, fitting this box (which was very easy for someone with a little bit of knowledge about wiring) has resolved the issue entirely. All the unwanted noise has gone...nothing. No interference, crackle, whine, high pitched tone or anything other than whatever I'm playing on the radio! Perfect. I'm so pleased, this product exceeded my expectations!

Used 1 on the rear camera 📷, 1 on the head unit display, seems to of reduced/stopped the interference on the rf

Wasn't sure if I should give this 2 or 3 stars. I can't say it doesn't work which is why I won't give it 1 star , but I can say it didn't work for me at all. Made no difference to the alternator whine. I tried installing it on the power to the head unit, & the power to the amp that runs the 4 door speakers without any effect.

Worked for me but make sure it's power line noise you have. Insulation a bit unnecessary but not too hard to get round.

Wired as described. Absolutely no affect. Still had ignition buzzing from speakers.wanting refund.

All good

Plus aucun sifflement ni bruit parasite dans les hauts parleurs, je recommande

Does the job it is supposed to do. I use it with the amp in my car. As it sits in the power line, it doesn't effect the audio signal in any way. Adding this device completely removed al the noise and artifacts in my sound system, caused by interference from the electrical systems in my car. And as my car is a hybrid, there was a lot of that.It has only been in the car for a week now, so I cannot say anything about the longevity of the device. But for now, happy with the product.

Le produit n’a pas fonctionné de mon coté, j’ai pourtant essayé avec plusieurs masse, mais rien à faire, c’est même pire avec 🤦‍♂️Je demande un remboursement

Habe das Produkt wie beschrieben vor meinen Verstärker angeschlossen. Daraufhin war das Lichtmaschinenpfeifen weg. Die Musik auch🤨. Kundensupport hat es auch nicht nötig, sich innerhalb von drei Tagen zurückzumelden. Finde ich ein bisschen blöd. Auch die Leitungen sind, wenn man mich fragt, Verarsche; im Draht ist kaum Kupfer vorhanden, die Isolierung ist viel zu dick, total überdimensioniert (für wirklich so nen kleinen Drahtdurchmesser, kann man auch an den Bildern vom Artikel leicht überblicken).