AudioprojectA259 - NF Noise Filter Car Radio Noise Filter Cinch Plug gold plated (20 Hz - 33 kHz) Ground Loop Isolator Car HiFi Car Amplifier Subwoofer

I use a headphone amplifier with multiple analogue inputs, which also has a pre-out. This pre-out is sent to a speaker amplifier and that's where I have problems.With the speakers playing nothing and turned up, there's a lot of electrical interferences, a bit like E.T phoning home.I place this at the speaker amplifiers end (over 10 meters away), so the pre-out goes straight into this isolator then into the speaker amplifierIt's now silent. All noise is gone. Fantastic piece of equipment n

This item didn't work on my system. Still have the noise of the engine running through the speakers

Yes

Really not sure why people think these affect sound quality! They are a fantastic product that fixed my ground loop issues. I use 3 from my avr into minidsp, and 2 behringer a500. Absolutely no negative impact on sound quality while listening to my favourite music.

Very good product, had alternator whine and other disruption coming from my car amp. Tried another ground isolator which fixed the issue but severely reduced audio bass and treble. However this product made the noise and whines disappear and sound quality remained the same

Worked exactly how it should do

This device would have worked well to solve my issue. My computer has a lot of power supply interference when plugged directly into my integrated amplifier and when plugged in with this that issue disappears, but there is no output whatsoever from the left channel. I'm returning it for this reason. If you can get one of these working, they'll do their job well but I'd suggest avoiding these ones in particular as you may encounter the same problem that I have.

En utilisation nomade, l'alimentation de mon pc qui fait 12v > 19v génère des hautes fréquences.Alors c'est inaudible quand j'utilise la sortie audio du pc, mais ça fait un bruit infernal quand j'utilise ma carte son externe, pourtant alimentée par l'usb (et c'est peut-être à ce niveau que ça se passe. Je me dis que la sortie audio du pc doit être anti parasitée, mais il ne doit pas y avoir de dispositif anti parasite entre l'entrée de l'alimentation en 19v et les alimentations 5v des prises usb).J'ai fabriqué un filtre pour l'alim du pc avec une inductance et un condensateur. Ça a aidé un peu, mais ce n'était pas suffisant à mon goût.Ce filtre posé en série entre la sortie de ma carte son et les moniteurs a considérablement réduit ces parasites, à un point quasi inaudible.C'est vraiment efficace ! 👍🏼

hs il n y a qu' une sortie qui fonctionne

It's pretty straightforward to connect so pretty tricky to get that wrong but regardless, it made the whining noise 10x louder! It did the exact opposite. Very disappointing and an utter waste of money!

Ik moet eerlijk zeggen dat ik het niet had verwacht, ik heb honderden recensies gelezen over gelijkwaardige producten, maar alle reviews waren vergelijkbaar; zo'n 60 positief maar ook zo'n 16 negatief, daar had ik dus niets aan. Dus dan maar voor de goedkoopste (terugzenden kan altijd) en kijken wat het doet.Mijn systeem (Audi Full Bose inclusief extra amp dus) is niet de goedkoopste en redelijk high-end, maar deze units (ik moest er 2 bestellen, want 4 x RCA) zorgden er voor dat ALLE ruis etc verdween, OOK als de motor draait! Aanrader dus (met iemand met hetzelfde probleem)! En daarnaast absoluut geen verlies in audio kwaliteit of volume.

Dopo aver montato l amplificatore nella auto,è iniziato il classico ronzio dell motore, prima di mettere mano a passaggi cavi, rca.masse.ecc, ho provato questo,ero scettico ma collegato all uscita dell ampli. Ha risolto il problema, avevo acquistato anche il filtro per alimentazione, che monterò lo stesso. Visto la spesa consiglio di provare. Dover mettere mani ai cavi e passaggi non ne avevo voglia .