It allowed me to use the phone (albeit not very well---I had to use it in 'speaker' mode, and the noise in the car was quite audible to people I called) and to listen to podcasts and music

That excitement quickly went away when I plugged it in to my 2009 Jeep Patriot and heard an awful buzzing/humming noise

I purchased the Mpow ground loop noise isolator and wow!!

They recommend a noise

Overall not too bad, but I wouldn't buy it again unless it were a last resort because the noise is rather irritable.

The connecrion to the auxiliary port creates an annoying buzzing noise

It doesn't filter out background noise very well on phone calls though

The only issue i have encountered was a slight static noise, but that's an issue with the car

Makes a horrible whine noise when connected and turned on with no sounds playing.

I did read other reviews and added a ground-loop noise isolator (have never used without so not sure if that is making a big difference or not).

I thought I was going to have to buy one of those ground loop noise isolators - no need

Before the isolator, it was un-usable, WAY too much noise and static.

Some people have complained about ground loop hum or noise

Catches some static noises, and the voice is somewhat muffled

No noise distortion.

When listening to a song or book at low volume you get a static or humming noise coming from the speakers

No issues with phone calls like excessive back round noise or dropping, works great.

Decent noise cancellation, but won't fix a car's inherent wind or rain volume much.

As of now I am not happy with the device and I will probably send it back if the ground loop isolator doesn't fix the humming noise.

This isn't ground noise (the engine was off)

I have an 07 mazda 3 and I did have to purchase a ground noise loop isolator made by mpow because I was getting bad noise without it

There is also a very loud and annoying buzzing / humming noise the entire time the device is on.

3 star rating because, although the unit works as advertised, it can cause a severe ground noise

Also if you stereo makes an annoying static noise when you plug in your aux and a charging cord into your phone this most likely will cause the same noise but it is easily fixable with the mpow noise isolater

Thanks device pairs very quickly with my phone and plays music and foes phone calls but the incessant white noise / ticking sound is going to make me RMA this

You will want to get a ground loop isolator for this to eliminate the whining noise.

There was ground loop noise, but this little box took care of that http://www.amazon.com/gp/product/B001EAQTRI?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00I no longer have to connect a cable to listen to music like a barbarian.

The device does not isolate electrical noise, so your audio system will constantly emit a high pitched whine

: Mine seems to have shipped with a ground loop noise isolator, easily adding $5 or so in value, if you need it

Mine had a bad buzzing noise but after I connected the filter, it's crystal clear

I got a ground loop wire to cancel out any static noises and have zero complaints.

My only gripe is that the car noise it picks up especially on the highway can make it hard for people to hear me well

There is a slight "humming" noise so a noise reduction filter may be necessary

Great sound quality, no static or interference noise

Great sound quality, no static or interference noise

Used it less than a week, static noise is just too bad

Very loud and annoying noise on the output to the cars auxiliary port

I recommend buying a Group Loop Isolator with this product - it will eliminate (if you have any) static noise

I tried it on my BMW 328i 2009 and it made a static noise, that does not happen when I use my auxiliary cord

There is a small bit of hiss noise when the volume is completely silent

Purchase the ground loop with this to avoid static noise

Fortunately another user recommended this so when my wife was disappointed because of the static I promptly purchased the "Pac SNI