Features:

  • ELIMINATING BUZZING NOISE : Completely eliminating the buzzing noise, caused by ground loops which happens when the audio source and the speaker use the same power source in some car speakers / home stereo systems when using the Bluetooth receiver.
  • WORKING PRINCIPLE : The working principle of this noise isolator is to achieve a clear speech/music by eliminating the current noise in some car speakers / home stereo systems.
  • COMPATIBLE MODELS : Works with any portable device that has 3.5mm audio jacks, for your Car Audio System/Home Stereo, when grounding issues persist. Also used with a Bluetooth Receiver/Bluetooth Hands-free Car Kit in your Car Audio System/Home Stereo.
  • COMPACT AND PORTABLE : Being so mini and light-weight (2.01*0.59*0.59 IN, 0.99 OZ), this little gadget does not take much space and can be easily taken away.
  • NOTE: The Ground Loop Isolator connect to the AUX Jack in car to eliminate noise.You will enjoy good quality sound when use it with Ground Loop Noise isolator.
This fixed my static noise issues with a Pixel plugged directly into the aux port of my after factory stereo.

I have an older car with an after factory stereo that has an aux plugin for my, at the time, mp3 player and now my phone. It worked fine until I upgraded to a Pixel, which apparently is too good for my car. It presented with horrible stabs of static every few seconds whenever I had my phone connected both to the aux port and plugged into my lighter for charging. It happened with both lighters, and all chargers that I tried. When the charger was unplugged it was better, but I still got the occasional burst of static. Something about how my car was wired was not happy with the quality of sound the Pixel produced. Enter this little $9 noise isolator. I got it without figuring it would do much, but hopeful. The moment I looped it in, plugging it into my stereo's aux port and then the pixel's audio cable into that, I noticed a significant difference. I have not heard a single bit of static since using it and it has been at least a couple of weeks now. So if you're getting unexplained static using your Pixel, or indeed any phone though Pixels seem especially prone to it, and you have it plugged into an aux port... get one of these.

Awesome. Really limited the background "noise" on an audio input.

For our cable access tv station we get our audio for our community bulletin board from a pc running an mp3 player and feed the audio into our video server. This computer audio card to computer audio card had a background "noise" on it. The strange thing is you could not hear the noise if you plugged headphones into the source computer. First I tried other cables (none very expensive). I saw this thing and while skeptical thought for the price it made sense to give it a try - it made a huge difference. Extremely surprised and excited to finally resolve this issue (we had been trying things for months). Have not noticed this doing anything "else" to the audio signal. Volume seems the same. Quality is obviously better as the background "noise" is gone. Have no idea how it works, just happy it does.

Static noise or not?

I installed HIMBOX last week in my Huyndai Sonata '09. All was good and beautiful when I was using it for playing audiobooks, and music. Troubles started when nothing was going on (only power on on radio and with phone connected), all I could hear was horrible static noise. There was no difference if engine was running or not. Similar thing was going on when I was using system as Bluetooth loud speaker. Background noise was absolutely unacceptable. It is all gone now. I just plugged that little jewel between car and HIMBOX jack, and all is perfect. Sound quality is unchanged. When music is off all is nice and quite. When I'm using it to make phone call is nice and clear, and other side is not complaining anymore. Absolutely necessary item if you hear what you shouldn't in your car.

Echoing every other review... this thing is great!

A lot of people use these in their car to eliminate ground loops because they'll charge their phone and use the 3.5mm headphone jack for audio output (thus creating a ground loop). I, for some reason, had a terrible ground loop in my desktop PC. I don't know how or why, but if I wore headphones, I could hear static and a high pitched whine while moving my mouse. When I first heard it, I immediately recognized the noise as a ground loop after hearing it so many times in my car (which is why I now use a modified iPod Video). I checked all my outlets, secured all my connections, all to no avail. On a whim, I bought this very ground loop isolator and installed it between my PC and the audio splitter (I have two separate connections for a headphone amp and speakers). Installation is incredibly easy. Each side of the isolator has 3.5mm inputs and they give you a 3" male to male 3.5mm cable so you can easily install it between your source and output device. The loop isolator is bi-directional, so it doesn't matter which side goes to what device. Once installed, it simply removes any ground loop noise you had previously as if it's magic. I tested this on my PC and did not notice any change in audio quality whatsoever. A lot of low star reviews say that it makes your speakers sound blown. I'm no audiophile, but I know a thing or two about audio. At home, I use Klipsch ProMedia 2.1 speakers (known for their bass) and Sennheiser HD201 headphones (known to favor neutral EQs). Turning up the Klipsch to 70% max (they get uncomfortably loud any higher) or maxing out the Sennheiser's does not cause any distortion whatsoever. If you have this issue, the ground loop isolator may be faulty OR you need to properly tune your amp and headunit so that you are not clipping at higher volumes. The msot accurate way to do this is with an oscilloscope (which may be a bit hard to find/afford). The easiest way to avoid clipping is to never go above 75% volume on any output device and always use Line Out. Ultimately, this ground loop isolator works brilliantly and my only regret was that I didn't buy it sooner.

Clear, Interference-Free Listening for Your Car Audio System!

"SCREEEEECH BEEEEP scriggle whine" That is the sound my car audio would make when I connected my phone to the 12 volt charger and my auxiliary audio cable at the same time. HOWEVER, simply plugging the Mpow Ground Loop Noise Isolator in between my audio cable and my phone has completely stopped the problem. It works with every charger and every phone I've every connected to it, and eliminates the digital noise and fuzz that interferes with the audio signal providing a clear, unadulterated signal for my music, audiobook, podcast, or phone calls. My 2008 Prius has the AUX input in the center console so I just run the audio cable under the armrest. To install the Mpow unit I took a bit of heavy duty adhesive Velcro and stuck the loop side to the inside wall of the console compartment and the hook side to the isolator and affixed it so that the short jumper audio cable reached the input plug neatly. I buy the nice ANKER brand male to male 3.5 audio cables and they work well with this unit and my phone. For reference, I've tested this with the following phones:OnePlus 3, iPhone 6s+, and a Lumia 640 XL. All created noise when charging and listening simultaneously before installing the ground loop isolator and all noise and interference issues were corrected once the ground loop isolator was installed.

Solved! BMW Disappearing Aux - Do this first!

Disappearing Aux option BMW E46 - Problem Solved! I have a 2005 BMW 325i. I installed an aftermarket Aux cable (eBay) and it worked for about two days. On the third day, the Aux option on my stereo disappeared. It was completely gone. After disconnecting/reconnecting everything, taking the negative cable off my battery, reading every post on the internet and researching having my stereo coded at the dealer, I came to the following conclusions and fix. 1. If you do not have an AUX option on your Business CD prior to installing an Aux cable, then it probably will not work. Aux is only enabled on e46's made after 2002. 2. Installing either the OE AUX cable or an aftermarket Aux cable may not work consistently or may cause your AUX option to disappear completely. 3. If your Aux option disappears, you do not need to have your radio coded at the dealer. If the Aux option was enabled before the cable install, it is still there. More than likely, the radio is no longer recognizing the Aux port due to a Ground Loop fault. This will happen most often when your phone is plugged into a USB charger and the Aux port at the same time. (I won't get technical here - there are many posts about this on the internet and even a DIY on how to build your own cable.) 4. Plugging a Ground Loop Isolator directly into the Aux port will probably fix the issue. With the car and stereo off, I plugged the Ground Loop Isolator into the new Aux port and my telephone into the opposite end of the Ground Loop Isolator. I then turned the key to the first position. My Aux option instantly reappeared on my stereo and it is working great. I can also charge my telephone and use the Aux simultaneously now. I hope this helps someone else avoid the craziness of trying to solve this problem. Do this first!

Works like a tech dongle charm thingamajig.

Fantastic piece of technology. I struggled with engine grounding issue/noise for almost two years. I have tried everything from ferrite beads to shielded cables but in vain. The only solution was to not charge my bluetooth receiver whilst listening to it. But I stumbled upon this awesome piece while looking for a 4.1 bluetooth receiver. Works as advertised. It is slightly chunky compared to your ferrite bead type solution but if you have a hidden aux port like I do in my car, you wont even see it. Completely removes the signal noise (well not completely, I have not tested it out with an oscilloscope but trust me human ears wont pick up the noise anymore). I am thinking of getting this again for my gaming PC where sometimes I get a bad whine when the GPU is on full load. I will test it out and update if this fixes that issue. Note: I plugged this guy directly to the bluetooth receiver to take this picture but is normally plugged directly into the aux input behind the console. The cable on the device is also replaceable. It is basically a cuboidal cylinder with one headphone jack (3.5mm) on each end. Very solid build.

Holy crap! IT WORKS!!!

My baby is my 2007 Chevy Tahoe LTZ. His name is Lightning The Queen. I bought him new so many years ago, and now that he has 210,000 miles on him, he doesn't like it when I play music though the AUX cable and charge my S8 at the same time. He shows his displeasure by making awful screeching noises and high-pitched whines through the Bose speakers because he doesn't like the ground loop created by the phone, charging port, and AUX input. Or something. I'm not an electrical engineer, I'm not even that smart, and I'm blonde. So anyway that meant that for years (since I switched to Samsung S phones from Motorola, come to think of it) I had three choices: 1) Listen to my music and watch my battery dwindle to nothing, then charge and switch to [ugh] the radio; 2) Listen and charge and crank it up so loud I could barely hear the static and high-pitched whine; 3) Put all my music on CDs and party like it's 1999. That is, until I bought this tiny marvel! [ANGELS SINGING ON HIGH] I've been dealing with this for years. YEARS! How did I not know there was a solution for, like, $5?! Oh yeah, that's right, blonde, not smart, not engineer. Anyway, take my uneducated, flibbertigibbet word for it and BUY THIS THING. You plug it in, plug in your AUX cable, NO MORE NOISE. At least in a 2007 silver mist Chevy Tahoe LTZ with 200k+ named Lightning The Queen. Oh, some reviewers argued about decibels and bass and blah blah something; I could discern no difference whatsoever in music quality, although to be fair, I had "Rolex" on repeat so maybe your more highbrow musical ears may hear something different. Happy listening! I sure am now!

Total Gem! Solved the Noise Problem We Had

Absolutely a little gem. So, my specific use for this product is probably not a common thing, but I thought I'd describe it in case someone else has the problem too. The ground loop noise problem was happening between a PC sound card input and a two-way radio being used as a receiver. We are using the audio from this radio to feed the PC to provide audio from our ham radio group's repeater to Broadcastify. Prior to using this device, there was this constant "whine". It sounds similar to the whine you hear on a commercial airliner when you plug your headphones in - that high frequency alternator whine. The instant we put this inline between the PC and the radio, the problem went away. I highly recommend this for similar ground loop issues. It will probably solve your problem!

Using with Nintendo Switch and PC together

I bought this to use on my Nintendo switch. Recently I bought a third party dock for my computer desk so I could hook up my Switch to my main monitor. The issue with the was no matter how I tried, using one set of headphones for both the computer sound and Switch resulted in some bad buzzing. Bought this adapter in hopes of fixing it, and it did 100%. I am running the Switch to the line-in on my PC now, and outputting to my headphones via an audio DAC connected to my PC via USB. I also tried this by connecting my headphones (Vmoda m100 has two inputs) directly to the DAC for my PC and my switch together. No more buzz with this adapter connected into my Switch. Just wanted to write this review in case anyone else wants to try this or has the same issue. 5/5 Now I can listen to Spotify, YouTube and Discord (when I play with friends) on my PC while simultaneously listening to my Switch with one set of headphones through my DAC (using a Fiio 12k + X3-II).

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