Carwires MJ35NF – Premium Ground Loop Noise Isolator (3.5mm Input/Output)

I bought a bluetooth transmitter/receiver with APTx-HD (boltune's) and it works amazing but when I plug it in to charge, it was creating a noise, then I googled what's the issue and I saw type of product as the solution. Tried it out and hey its working! No noise when charging the device

I used these in conjunction with a Furman power conditioner and this has worked quite well for my setup. Which is used for video recording using OBS Studio. I kept having noise in the mic when recording, these help suppress that noise to nearly nil. Excellent!My setup:Audio 2000 mixing boardRockville 6 in. bookshelf speakersBoth connected to a beast of a computer

I listen to Pandora through my motorcycle sound system. After adding a USB charging port, my phone would emit a whine if listening while charging... very annoying as it was quite loud. This product eliminates the whine 100%! I am more than pleased and would recommend this to anyone with any buzzing noises in their auto sound system. Fantastic!

This was to decrease 60k hum in a mic circuit but actually created a very strong buzz. Clearly better without it in place. Perhaps it was my application of the wrong device, but I would not have expected a worsening of the signal.

I heard this back to back with the PAC external unit and any difference was marginal, if at all. A noise filter on the lighter power supply line would likely do better and be hidden behind the dash, but this is an inexpensive and mostly effective solution for the very noisy Aux inputs like the ones in my GM cars.

Inexpensive, but WORKS. The hissing is gone. More importantly the WHINING is gone. That cheap blue-tooth in the cigarette lighter plugged into the line-in (cause line-in delivers higher quality than FM radio, natch)? You need THIS DEVICE with it to skip the whining sounds.Works like a CHAMP!!!Sweet, sweet silence (except when the music or pod-cast is playing.)IT WORKS!!!!!!!!

Had a buzz from ground loops due to 3 PC's mechanically switched to one headphone or amplified speaker. Since these units do a complete transformer isolation (i.e. no continuity from input to output), I only need 2 Isolators for 3 PC's. They plug nicely in line at the back of PC's with included cable. I cannot attest to sound quality since I only DVR OTA TV or listen to Webinars, not at all an audiophile. But i'm very happy with the quality. Have not checked, but suspect they would not handle the power requirement for passive (un-amplified) speakers at other than very low volume.

For some reason I was getting a low humming sound when I connected my iPhone through my car's AUX port. So I decided to do some research on the web. The quick fix without having to change my stereo was to try one of these "ground loop isolators". To my surprise it removed that annoying low humming sound.Great noise filter, highly recommend. Thanks!