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PAC SNI-1/3.5

3.5mm Ground Loop Noise Isolator Works W/ iPod / Zune / iRiver and Others

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List price $16.95

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$10.99

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Ground Loop Isolator

If you are like most folks, you probably hate when you plug your portable music player into the 3.5mm (headphone jack) aux input on your car stereo and get an annoying whine that interferes with music playback. Well if so, the PAC SNI-1/3.5 is the answer for you. PAC's SNI-1/3.5 preamp noise filter plugs in between your receiver's auxiliary input and your portable music player and helps reduce noise caused by ground loops. The filter includes a female 3.5mm input, a male 3.5mm output, and 10 inches of cable for each jack.

Product Features

  • Ground loop isolator
  • Close to perfect response of +/- 0.03 dB from 2-20,000 Hz
  • Utilizes proprietary audio transformers for a 1.3 dB gain
  • Female 3.5mm input
  • Male 3.5mm output
  • 10 Inches of cable for each jack
  • 1-year Manufacturer's Warranty

Product History:

PAC LPGL-2 thumbnail
(newest, current model)
PAC SNI-1/3.5 thumbnail
(previous model, replaced by PAC LPGL-2)

Noise Filter Specifications

Noise Filter Type
This designates the type of noise filter listed.

Ground Loop Isolators are connected in-line with the RCA interconnects or other audio cables.

Power Line noise filters connect to the power line of the receiver and help reduce noise from the source.

Pop Eliminator noise filters are designed to remove the "pop" that occasionally happens in some systems when the vehicle is turned on.

Ground Loop Isolator

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
75%
4 Star
18%
3 Star
5%
2 Star
0%
1 Star
3%

Average Attribution Rating

Durability
4.5
Value
4.7
Features
4.5
Design
4.2
Usability
4.9
James

Charlotte, NC

Overall
Durability
Value
Features
Design
Usability
VERY PLEASED

February 13, 2009

This was the absolute best ground loop isolator I've seen. It worked remarkably well on a computer that is in a vehicle. I thought I was going to have to take an RCA isolator and mod it for 3.5mm plugs ...not with these babies! Definitely would recommend and I would buy again if needed.

8 of 13 found this helpful

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eeast

Knoxville, TN

Overall
Durability
Value
Features
Design
Usability
Excellent perfomance: no more Alternator Squeal

August 19, 2013

The price is right and if you need a stereo-mini ground loop isolator, look no further. My Aux-in was very noisy until I used this filter. Just plug it in right before the Aux-in.

13 of 24 found this helpful

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GlobalPolygraph

Elmira, NY

Overall
Durability
Value
Features
Design
Usability
Good value but

December 21, 2011

This is the third SNI-1/3.5 I've bought, and they seem to work great for the first year or so and then the audio quality begins to get muffled and I have to buy another. I should note that I use this unit for my music input in a small (noisy) airplane, and there's lots of vibration the unit needs to deal with. So that said, it's seems to be a good unit but wouldn't recommend it in a high vibration environment.

12 of 22 found this helpful

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EnjoyingBetterSound

Mission Viejo, CA

Overall
Durability
Value
Features
Design
Usability
Works perfectly

December 7, 2010

Recently bought a Mazda5 with an AUX jack. Problem was, when I plugged my iPod into it, it sounded like the noise was coming through a lawn mower. After some searching, I came across this little gem. Plugged it in between the headphone jack of my iPod and the AUX jack of my Mazda and voila, no more lawn mower noise, just sweet, sweet music. Thanks Sonic!

My one complaint - seems like this probably could have been a bit more sleek. It hides well enough (it's about a 2" cube) but something a bit slimmer would have been even better. That's just a minor quibble though.

7 of 12 found this helpful

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lmd6204

Chicago

Overall
Durability
Value
Features
Design
Usability
Works very good

September 6, 2012

I bought this filter for hooking up my smartphone to my aux input in my car's stereo system. I was getting constant very bad noise when I listened to music on Pandora through my car system (I think the noise is from the processor in my phone). This filter took almost all of the noise away and I am able to enjoy my music. I do, still, however get these little high frequencies pitches of noise which aren't so bad and I can live with them.

10 of 19 found this helpful

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Cliff

Santa Cruz, CA

Overall
Durability
Value
Features
Design
Usability
does what it should

November 14, 2011

The product worked perfectly in my application, totally eliminating the hum problems in my portable sound system. I purchased two more after testing the first one.

11 of 21 found this helpful

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rrios28

El Paso, Texas

Overall
Durability
Value
Features
Design
Usability
Pac SNI - 1/3.5

October 31, 2011

This item removed about 60-70% of my wining engine noise that was really making it difficult to listen to my radio. After install a world of difference could be heard. Great product. Thanks!

9 of 17 found this helpful

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LM

San Mateo, CA

Overall
Durability
Value
Features
Design
Usability
eliminates static in car

October 10, 2011

I got this gadget to eliminate the bad static I heard when listening to my DroidX through the car speakers and plugged in to the car charger at the same time. Works like a charm! A friend had recommended it and it works great for him too on his iPhone.

11 of 21 found this helpful

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Jim W

Tucson, AZ

Overall
Durability
Value
Features
Design
Usability
Problem Solved!

September 25, 2011

This device eliminated the interference I experienced when I had my iPhone connected to the car's power source and sound system. It fits nicely in the console box of my 2007 Prius and plugs into the port for auxiliary devices. I plug the audio cable directly into the device. Simple. Inexpensive. Effective.

10 of 19 found this helpful

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Brett

Chicago, IL

Overall
Durability
Value
Features
Design
Usability
Does Exactly What It Is Suppose To Do

June 7, 2011

I had a ground loop noise problem in my wife's 2008 Mazda 3. Plugged this in and the noise was gone. Much easier than messing with the internal wiring.

10 of 19 found this helpful

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Steve K

Walnut Creek, CA

Overall
Durability
Value
Features
Design
Usability
WORKS!

September 10, 2012

After doing research on how to eliminate the ground loop hum/buzz I was getting on my SoundWorks amplified 2.1 speaker system connected to an Iogear Miniview DVI 4-Port USB KVM Switch I decided to give this product a try. I checked online and found that it was available for an excellent price at Sonix Electronix. I ordered four of them, one for each computer connection. Installing them on each of the audio outputs of the KVM completely resolved the problem - NO MORE HUM/BUZZ! I highly recommend this product and have done so already to Iogear's technical support.

7 of 14 found this helpful

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G

PA

Overall
Durability
Value
Features
Design
Usability
PAC SNI-1/3.5

November 13, 2011

I had a slight buzzing noise coming from my TV after I hooked up computer speakers to it. I tried everything, then bought this. Still didn't work. Buzz is low enough that I can live with... I am rating this item ONE star only b/c it didnt fix what I bought it for. Maybe I bought the wrong item or attempted the correct a problem that isnt suppose to be fxed by this kind of product. I dont know.

9 of 18 found this helpful

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James

Marietta, GA

Overall
Durability
Value
Features
Design
Usability
Good Value

July 10, 2011

The audio transformer offered the best value and the connector interfaces that I needed to meet a tight deadline.

I would definitely recommend your products for their quality and value.

6 of 12 found this helpful

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Noodle

Atlanta, GA

Overall
Durability
Value
Features
Design
Usability
Handled non-standard use perfectly

June 6, 2011

I grabbed two of these to correct an issue with a custom audio network between two computers, an office phone, a cell phone, and one headset with microphone.
Understandably, this generated a lot of hum, hiss, and clicking on its own, especially when the cell was plugged into the computer to charge...
With both phone outputs run through these, there is not a single click or hum left in the sound, and the stereo separation has actually improved.
In short, these have done the seemingly impossible - highly recommended!

7 of 14 found this helpful

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Karl

Wesborough, MA

Overall
Durability
Value
Features
Design
Usability
The cure for satellite radio hum

May 2, 2011

My VW has an audio input which I use for my Siruis s50 sat. radio. Before using this device any acceleration / deceleration would register through my loudspeakers. With this device in between the radio and the sat device all hum was removed, however this device appears to be failing only after 6 months use.

7 of 14 found this helpful

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Bob C.

San Francisco

Overall
Durability
Value
Features
Design
Usability
Success in Connecting a Droid to a Scion xB

February 21, 2011

When I first tried to connect my Motorola Droid to my Scion xB's audio system, I experienced noise. Introducing this device into the circuit solved the problem.

2 of 4 found this helpful

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randy

Kailua, HI

Overall
Durability
Value
Features
Design
Usability
It works!

September 20, 2010

This product works to clarify your listening enjoyment.. Simply installation too. just plug in.

3 of 6 found this helpful

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Tom

St. Louis

Overall
Durability
Value
Features
Design
Usability
Great Product

June 18, 2010

This worked great to filter out the annoying whining in my Mazda 3 when using the auxiliary port to plug in my Sirius Satellite!!! It is just plug and play.

3 of 6 found this helpful

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BIG DOG PITBUL

NY

Overall
Durability
Value
Features
Design
Usability
Great Value!

March 4, 2010

Product works as described.

6 of 12 found this helpful

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anonymous

groton, ma

Overall
Durability
Value
Features
Design
Usability
Zumo Auto isolation

February 1, 2010

I used this to isolate a Garmin Zumo from a Autocom audio source. Works great.

6 of 12 found this helpful

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TaLLice

Canal Winchester, OH

Overall
Durability
Value
Features
Design
Usability
This gizmo made me sane again!

September 15, 2009

I have a Mazda3 with the built-in aux input located in the console. Before I bought this, I could not charge and listen to my iPhone or XM Pioneer Inno without hearing that annoying buzzing that amplified the faster I accelerated...not an issue if running my devices from their own batteries. This device completely got rid of the interference and I can enjoy my tunes or Ron & Fez with pristine audible clarity.

5 of 10 found this helpful

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Ferdie

Los Angeles, CA

Overall
Durability
Value
Features
Design
Usability
Sounds good

August 15, 2009

I picked up this device because I can't get a good signal off my Sirius radio via the FM transmitter so I decided to try this on my audio input and it really works. The sound is crisp with no humming from the engine noise what so ever.

I am really happy with it..!

3 of 6 found this helpful

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GMguy

Brownwood, TX

Overall
Durability
Value
Features
Design
Usability
Excellent Product!

July 28, 2009

I was looking for something to eliminate the high pitch whine that I got from my Sirius radio, and this is it! Look no further, this is all you need.

6 of 12 found this helpful

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Jack

Los Angeles, CA

Overall
Durability
Value
Features
Design
Usability
Works Great!

July 8, 2009

I bought the PAC SNI-1/3.5 preamp noise filter about 6 months ago and have it permanently plugged into my car's mp3 outlet and leave my ipod plugged into it.... it eliminates all the nasty hissing I used to hear, I highly recommend this device if you experience any interference.

4 of 8 found this helpful

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Jessica

Palo Alto, CA

Overall
Durability
Value
Features
Design
Usability
Great product

February 8, 2009

Whenever I plugged in my iPod to my car's AUX port, I got a lot of background buzzing. This product got rid of it completely.

6 of 12 found this helpful

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Pete

Brunswick, Ohio

Overall
Durability
Value
Features
Design
Usability
Worked Great !

February 3, 2009

I was getting a lot of whine with my Archos MP3 player. The SNI-1 completely eliminated all unwanted noise. I would recommend it highly!

5 of 10 found this helpful

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Sean

Auburn,al

Overall
Durability
Value
Features
Design
Usability
Works well

January 7, 2014

Cheap, simple, does the job. Removed all the noise from a leaky audio input jack.

13 of 27 found this helpful

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X

Texas

Overall
Durability
Value
Features
Design
Usability
Works as designed

January 18, 2013

Not the prettiest little device, but definitely does the job it was purchased for. Super simple install (inline to the AUX jack) and instant results. For reference, this is being used on a 2009 Mazda 3 with the infamous whine induced by having a device (phone in this instance) plugged into AUX audio port and charging from a 12v car charger at the same time. The PAC SNI-1/3.5 has been in place for about a year now and still works like a champ. This is a must-have to eliminate alternator whine.

4 of 9 found this helpful

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Chuck

WA

Overall
Durability
Value
Features
Design
Usability
Exactly what I needed!

January 6, 2013

My Toyota Rav-4 came with an ipod jack, but I rarely used it because there was an annoying hum through the speakers every time I did. Fortunately, I stumbled on some information online that led me to the Rav4World.com website where I learned of the existence of the PAC SNI-1/3.5 so I bought one, and it solved the problem instantly!

3 of 7 found this helpful

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Brian

Ohio

Overall
Durability
Value
Features
Design
Usability
Excellent product

December 11, 2012

I bought the loop for my XM radio which had horrible static. After the loop the sound quality is crystal clear.

7 of 15 found this helpful

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Mike

Houston, Tx

Overall
Durability
Value
Features
Design
Usability
Okay

March 12, 2012

I bought this device as a hum elimitator between a computer and a sound board. Works pretty good as long as the volume from the sound board is up.

3 of 7 found this helpful

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Znanoc

Chicago, IL

Overall
Durability
Value
Features
Design
Usability
Works as advertised

December 11, 2011

I bought this for my Toyota Camry with an auxiliary input. With some cars, if you try to plug in the power as well as the audio cable to your iPod/media player, there will be electronic interference and cause a slight buzzing through the speakers. By putting this adapter in between the player and the input for your car, this can reduce (and for me, remove) any of that interference.

Great product, highly recommended!

5 of 11 found this helpful

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Captain Weenie

Cookie Town, OK

Overall
Durability
Value
Features
Design
Usability
This product does work

October 11, 2011

I use this product every day in a semi-truck. It did remove the buzzing noise I would hear on my siriusxm radio. If you like the talk shows on siriusxm this product does improve the quality of your radio sound.

8 of 17 found this helpful

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Mike G

SanJose,CA

Overall
Durability
Value
Features
Design
Usability
PAC SNI-1/3.5

September 16, 2011

Installed and still had the static buzz in my ears. Needed to purchase another supressor. So this product didn't do its job.

7 of 15 found this helpful

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AmyL

San Francisco, CA

Overall
Durability
Value
Features
Design
Usability
Essential little piece of equipment

May 23, 2011

I've been doing audio demonstrations with some pretty unstable power outlets and the SNI-1/3.5 has become a required filter in my audio chain. Whether connecting up my laptop or an iPod, it pretty much eliminates all the nasty buzzing noise on the line. It's not super cheap but I have yet to find another ultra-portable filter that works as well. I ended up buying two.

6 of 13 found this helpful

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Frank

St Louis, MO

Overall
Durability
Value
Features
Design
Usability
Worked Exactly As Advertised. Kudo's Sonic Electronix

May 11, 2011

I've had the product for over 6 months and it continues to work spectacularly for me - exactly as advertised. It eliminated all of an annoying high pitched squeal from iPad audio piped into my 2007 Camry's Aux input. The squeal was only audible when iPad was being powered from my Camry's power outlets and the product eliminated 100% of the audible squeal for me.
Kudos Sonic Electronix on your PAC SNI-1/3.5 RCA Ground Loop Noise Isolator.

4 of 9 found this helpful

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Steve

San Diego, CA

Overall
Durability
Value
Features
Design
Usability
Works Great!

April 19, 2011

Had the rising and falling buzz from the engine anytime I tried to charge my iPod and listen to it at the same time. Installed the PAC SNI 1/3.5 in about 10 seconds.... problem gone. It just works.

6 of 13 found this helpful

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Mark

Culver City, CA

Overall
Durability
Value
Features
Design
Usability
Worked magically. A MUST have item.

March 15, 2011

I almost gave up on the noise coming from the audio jack of my Droid X when it's hooked to the power supply from my car. Then I found this product and it worked beautifully. Now I play music using Droid X while I'm driving without any problem. I finally succeeded in replacing my old iPod with my Android phone.

5 of 11 found this helpful

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Rob

Newport News, VA

Overall
Durability
Value
Features
Design
Usability
Works great!

March 2, 2011

I was having an issue playing music over my car stereo through my smartphone's audio out while charging, and someone recommended I get a ground loop isolator to solve the problem. I did some hunting around, but most solutions I found were for home stereos, and I didn't want to mess around with adapters.

This unit was exactly what I needed, and at the right price. It's small enough that it's not too obtrusive in a car, and more importantly, it works really well. I'd definitely recommend this to others.

5 of 11 found this helpful

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Devils944

Seattle

Overall
Durability
Value
Features
Design
Usability
Definitely Works, to a certian point

January 24, 2011

I would definitely recommend if you are picking up noise on your sound system. It easily eliminated 95% of the noise I was picking up. Sure there is some residual sound if you listen closely, but it makes a huge improvement.

5 of 11 found this helpful

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avc

tx

Overall
Durability
Value
Features
Design
Usability
Worked Great

January 3, 2011

I have a mazda3 and was getting an annoying buzzing whenever my phone was charging and playing music thru the jack. Plugged this in an perfect music quality.

3 of 7 found this helpful

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magste672112

Chicagoland, Il

Overall
Durability
Value
Features
Design
Usability
DId the trick

December 19, 2010

The item does what it says. No more hum/noise when attaching it to my ipod or Sat Radio Well worth the money.

3 of 7 found this helpful

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zymurgist

Augusta, GA

Overall
Durability
Value
Features
Design
Usability
Yes, it works!

October 18, 2010

I don't have an iPod, but I have a crackberry with an 8 GB memory chip. I like to listen to my music, and the stereo's aux port works just fine - but whenever I tried to recharge at the same time with the car charger, omg - the hum was unbearable. This little puppy did the trick. Sits behind the dash, never think about it. Awesome. (hope I remember to take it with me whenever I sell this car!)

2 of 5 found this helpful

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Ronald

Fairfax, VA

Overall
Durability
Value
Features
Design
Usability
PAC SNI-1/3.5

September 23, 2010

Product worked great and filtered out the low-frequency hum being encountered from our sound board by our video camera's external microphone input.

3 of 7 found this helpful

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Dan

Worcester, MA

Overall
Durability
Value
Features
Design
Usability
Works excellent.

July 24, 2010

Just as many have said about this type of product ... works very well to cancel out "noise" (hiss) when connecting your satellite radio receiver to your head unit aux input. some have mentioned that these tend to filter out a lot of the highs and lows, but when you are listening to satellite broadcasts, the fidelity of the audio is somewhat muted anyway.

i give this unit a thumbs up for the removal of the hiss, for the quality of the filtered audio, and for the benefit of having to only use your existing audio patch cable. many other units are RCA-type female connectors. they would require larger and more cables to complete your setup.

even if you do not think this would improve your audio, or if you think that your xm/sirius sound is okay, get one of these and realize better sound with your system.

1 of 3 found this helpful

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R

Dayton, OH

Overall
Durability
Value
Features
Design
Usability
Does the job.

January 22, 2010

The auxiliary input to my new stereo had a noisy ground loop, and this fixed it right up. My iPod was un-listenable before, but is great now.

3 of 7 found this helpful

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George

Chicago, IL

Overall
Durability
Value
Features
Design
Usability
Perfect solution for satellite radio

January 14, 2010

After installing a new Sirius Stratus 5 in my wife's Mazda 5, I noticed a high pitch whine from the aux input. The PAC SNI-1 fixed the issue perfectly. Easy install, great fit, perfect solution.

3 of 7 found this helpful

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Mike

Elmira, NY

Overall
Durability
Value
Features
Design
Usability
Works like a charm

December 10, 2009

I use this product to dampen noise in my small airplane so I can hear the XM radio through the headsets. If it can work in this environment it can work anywhere.

3 of 7 found this helpful

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Michael

New Freedom, PA

Overall
Durability
Value
Features
Design
Usability
Great little box

March 16, 2009

This has working wonderfully in conjunction with my Syflex Auxmod installed in my 2008 Mazda 6. Perfect connection every time, no static.

4 of 9 found this helpful

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Victor

Bellingham, WA

Overall
Durability
Value
Features
Design
Usability
Works great

March 4, 2009

we bought this item to eliminate the whining engine noise when using the aux port in our Mazda 3. I first thought there was something wrong with our ipod, but this completely solved our problem...no more whining!

6 of 13 found this helpful

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DCR

Laurel, MD

Overall
Durability
Value
Features
Design
Usability
recommended

March 3, 2009

Works as advertised, reasonable cost. I still now and then get a low hum (I use it to connect my iPhone to the aux input in my Prius), but it's hardly noticeable and nothing like how it was without this device. Recommended.

3 of 7 found this helpful

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Adam

Jericho, NY

Overall
Durability
Value
Features
Design
Usability
Works Fine

February 26, 2009

I purchased this on someone\'s recommendation so that I would be able to charge my mp3 player while running it through aux in my mazda3. It worked perfectly and solved my problem. I\'ve had it for 6 months and it\'s still working perfectly.

3 of 7 found this helpful

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JC

Reno, NV

Overall
Durability
Value
Features
Design
Usability
Immediate results

April 29, 2014

The annoying hum in my system was gone instantly when I hooked it up. I will never set up a system without one again

7 of 16 found this helpful

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Andrew

South Florida

Overall
Durability
Value
Features
Design
Usability
Cheap & Easy Fix for Poorly Designed Car!

August 26, 2012

This was very easy to install to cure the problems associated with Ground Loop problems in modern cars. I own a 2008 Prius that has a 3.5mm jack built into the car designed specifically to connect your portable MP3 player to the factory car sound system. It works great until you connect your portable device to 12V car power and then that awful squeal with the audio.

I just plugged the PAC SNIj-1/3.5 into the cars audio port and added a separately purchased adapter/extension cable to the device to my MP3 player and problem solved! NO TOOLS REQUIRED!

Be advised that this device along with any other one you buy will lower the input voltage of the audio slightly which will lower the volume a bit, but it does eliminate the issue 100%. Just make sure you purchase an extension cable with the right gender at the ends so you can hide the PAC in your console or under a seat etc. and it will be out of the way.

Enjoy!

2 of 6 found this helpful

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Mike H

Naperville, IL

Overall
Durability
Value
Features
Design
Usability
Gets the job done

August 7, 2012

This product works as advertised. Used to connect a DroidX to the stock radio in a Chevy Cruze. Small enough to fit in the center armrest with room to spare.

5 of 12 found this helpful

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Jim

Niles, OH

Overall
Durability
Value
Features
Design
Usability
Solved the problem

March 25, 2012

I was using an iPhone 3GS on my HD dresser, It was not good because I could hear engine noise through the head sets. Bought this pac sni-1/3.5, it totally solved my issue. I would recommend it to anyone with a similar problem.

5 of 12 found this helpful

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Larry

Old Forge NY

Overall
Durability
Value
Features
Design
Usability
Problem solved-noise eliminated.

November 7, 2011

When I played my MP3 player through my auxillary imput on my Goldwing -2006 the noise interference was noticeable and increased as I raised the rpm's. I inserted the SNI-1/3.5 between the player and the auxillary input in my left side glove box and the problem was solved. The product is compact and takes up little space.

2 of 6 found this helpful

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Abiezer

Galloway, NJ

Overall
Durability
Value
Features
Design
Usability
Good product

October 24, 2011

I used to conect a dvd tru my factory aux, and take at lease 40% of the feedback.

5 of 12 found this helpful

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Kerry

Bedford, TX

Overall
Durability
Value
Features
Design
Usability
Noise Reduction

October 18, 2011

Outstanding product! After installing my Sirius S-50 into my Toyota Tundra CrewMax, it had a horrible buzz when using the Aux jack. After purchasing this product and installing it, it sounds PERFECT!
Very good product, exactly what it advertised to do and worked perfectly!
Kerry

5 of 12 found this helpful

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Russel

Fort Knox, KY

Overall
Durability
Value
Features
Design
Usability
Review

August 25, 2011

It works great. No static noise at all.

6 of 14 found this helpful

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Matt

Santa Cruz, CA

Overall
Durability
Value
Features
Design
Usability
Works as advertised

December 6, 2010

Does what it is supposed to do. I had no problems and am thoroughly satisfied with the PAC SNI-1/3.5.

3 of 8 found this helpful

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Marty

Odessa, TX

Overall
Durability
Value
Features
Design
Usability
Works like a charm

November 5, 2010

Does what it is supposed to do and does it perfectly.

2 of 6 found this helpful

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Dave

San Jose, CA

Overall
Durability
Value
Features
Design
Usability
Perfect.

September 9, 2010

I own a 2009 Mazda3. This solved the ground loop problem instantly. Couldn't recommend more!

3 of 8 found this helpful

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Bob

Sacramento, CA

Overall
Durability
Value
Features
Design
Usability
Works but slightly decreases gain

August 11, 2010

This unit works very well to remove ground loop noise and whine, but it also decreases the volume slightly about 1.5 dB according to my measurements.

2 of 6 found this helpful

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Teamtree

Los Angeles, Ca

Overall
Durability
Value
Features
Design
Usability
It Works!

October 12, 2009

Problem Solved!
if you have a noise you can't get rid of when you plug in your ipod or other device into the accessory jack on your car or motorcycle radio it is most likely caused by a ground loop. This WILL fix it!

2 of 6 found this helpful

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riki

Cary, NC

Overall
Durability
Value
Features
Design
Usability
It is not effective in every application

May 11, 2009

I bought this filter because of engine interference when I play music from my car. This filter filters out the vocals of my songs. It may work in other cars but it did not work as expected on my Corolla.

4 of 10 found this helpful

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XM Radio Owner

Rochester, NY

Overall
Durability
Value
Features
Design
Usability
This thign should be renamed Noise-Be-Gone!

January 30, 2009

This unit works exactly as advertised. I replaced my factory installed radio because I wanted to get away from the low-fi FM modulator I was using to listen to my satellite radio, but the ignition noise was making me crazy. Then I found this gem! I saw the reviews and I must say, they were right on the money -- this thing eliminated the ignition noise with absolutely no negative impact on the audio quality that I could detect. It's worth every penny!

3 of 8 found this helpful

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james

Charlotte, NC

Overall
Durability
Value
Features
Design
Usability
Absolutely Amazed

August 11, 2008

5 stars the whole way. Absolutely amazing product. I had a very high-pitched whine on my Sirius and TV inputs to a vehicle pc ... this completely eliminated them. Very satisfied, but more importantly, I am very impressed with Sonic's service. They processed my phone order in about 10 minutes, and I had these in my hands the next day by 10:30A ... all the way from the west coast! (I'm in NC) Hands down, excellent service and a great product!

2 of 6 found this helpful

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DesertRatt

Yuma, AZ

Overall
Durability
Value
Features
Design
Usability
Noise Gone

March 1, 2012

If you have an audio source that is being degraded by an ambient noise. This will do the trick. I have bought two of these for this application. It worked in both situations. It could be smaller, but that is a minor flaw.

1 of 5 found this helpful

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Abe

Roseland, VA

Overall
Durability
Value
Features
Design
Usability
Good product

November 15, 2011

Does what it says and that's all I need.

3 of 9 found this helpful

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Very Pleased

Aurora, CO

Overall
Durability
Value
Features
Design
Usability
Works Great!

October 29, 2011

I was hesitant about the low cost of these isolation transformers compared to others on the market. I am running an internet streaming radio and needed several filters. I bought one hoping it would do the job, with the goal of buying as many as 12. After using the one I bought as a test on all of my connections, I turned around and bought the other 11! This works great, and it's low cost! No hesitations, I would by more in a heartbeat if needed!

3 of 9 found this helpful

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BillSTP

Santa Rosa, CA

Overall
Durability
Value
Features
Design
Usability
Works great ! Completely eliminated noise problem.

May 5, 2011

This works great! I had some terrible ground loop noise problems while using my iTouch with an FM transmitter in my truck. It was driving me crazy. This isolation transformer completed eliminated the noise. And it couldn't be easier, just plug it inline and you're good to go.

5 of 13 found this helpful

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Jim

Raleigh, NC

Overall
Durability
Value
Features
Design
Usability
Works as advertised.

April 20, 2009

Works as advertised.. No more iPhone noise through the aux input in my car stereo.

2 of 7 found this helpful

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Colin

Great Britain

Overall
Durability
Value
Features
Design
Usability
Ground loop isolator

September 17, 2013

Excellent product and great service/delivery.
This product removed all hissing noises from my iPhone playing through the car stereo.

2 of 8 found this helpful

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Comanche

Copperas Cove, Texas

Overall
Durability
Value
Features
Design
Usability
Review

December 11, 2011

I like this. It does what it is supposed to do equalize the harmonics in the sound system on my motorcycle.

5 of 14 found this helpful

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HK

Canada

Overall
Durability
Value
Features
Design
Usability
Good value!

October 18, 2011

Works as advertised. It has solved our ground buzz 100%.

4 of 12 found this helpful

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maria

los angeles, ca

Overall
Durability
Value
Features
Design
Usability
inline filter for mp3 to 3.5 auto speaker input

April 27, 2011

great product. fixes all my noise problems.

6 of 16 found this helpful

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John

Canada

Overall
Durability
Value
Features
Design
Usability
Noise Filter

June 5, 2013

Had a high pitched squeal with XM satalite radio plugged into Aux jack. This filter has cured the problem and stopped the noise.

1 of 7 found this helpful

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Sam

Mineola, TX.

Overall
Durability
Value
Features
Design
Usability
Another winner from ELECTRONIX.COM !

January 10, 2012

It looked and worked as advertise! Needed it to go from my computer to 5.1 stereo receiver to stop the humming noise produce by the computer. It was simple, just plug and play and no more humming noise, nothing but good stereo sound all around. Would recommend this company for price, quality, and fast service.

1 of 8 found this helpful

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Browse 1 question and 4 answers
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Why did you choose this?
Sonic Electronix Store
car issue while charging phone
nathan r on Sep 8, 2014
Had good reviews with the features i needed
Nicholas R on Aug 17, 2014
The specs were within the desired range required for the audio equipment.
Brian V on Sep 3, 2014
Ground noise on Motorcycle
Dennis V on Aug 4, 2014

Product Summary

Manufacturer

Model Number

SNI-1/3.5

Weight

0.23lbs

Internal SKU

sni135

Internal Product ID

8987

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: PAC SNI-1/3.5