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PAC SNI-1/3.5 3.5-mm Ground Loop Noise Isolator Works with iPod/Zune/iRiver and Others

by PAC
4.3 out of 5 stars 1,755 customer reviews
| 71 answered questions

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  • 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 3.5-mm input
  • Male 3.5-mm output
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Frequently Bought Together

  • PAC SNI-1/3.5 3.5-mm Ground Loop Noise Isolator Works with iPod/Zune/iRiver and Others
  • +
  • Kinivo BTC450 Bluetooth Hands-Free Car Kit for Cars with Aux Input Jack (3.5 mm) - supports aptX
Total price: $43.97
Buy the selected items together


Product Information

Technical Details

Brand PAC
Model SNI-1 3.5
Item Weight 2.4 ounces
Product Dimensions 5.5 x 4 x 1.5 inches
Item model number SNI-1/3.5
Manufacturer Part Number SNI-1/3.5
Folding No

Additional Information

ASIN B001EAQTRI
Customer Reviews
4.3 out of 5 stars 1,755 customer reviews

4.3 out of 5 stars
Best Sellers Rank #438 in Automotive (See top 100)
#3 in Automotive > Replacement Parts > Lighting & Electrical > Electrical > Radio Accessories
#59 in Electronics > Accessories & Supplies > Audio & Video Accessories > Connectors & Adapters
Shipping Weight 6.1 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available August 13, 2008

Warranty & Support

Warranty, Parts:Parts

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Product Description

Line out converter for factory radios with 2 to 50-watts per channel. Accepts speaker level input and provides stereo RCA output signal for adding an aftermarket amplified audio system.


Product Features

 50 watts maximum input per channel
 Linear 20 to 20,000Hz output based on input signal
 Transformer isolated for optimal sound and performance
 Maintains correct phasing
 Works with most factory installed radios

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
I have a car stereo with an AUX-in port. Unfortunately, when my car is running and I have my iPod plugged in, I get a very obnoxious electronic whine (more noticeable during the summer at night, with the headlights on and the ac running...the more electrics running in your car, the louder the whine). It would get so bad that it would make listening to music more of an annoyance than anything.

Searching on Amazon for an auxiliary charger for my iTouch, I came across this in a "Buy these two devices together and save" item. And I am happy to say it completely eliminated all electronic whine/feedback. It could not be simpler to install...plug one end of the isolator into your AUX port, and the other end into your iPod/mp3 player/auxiliary accessory(Griffin AutoPilot FM Transmitter for iPod, Kensington LiquidAUX Auxiliary Car Kit with Remote for iPod; iPhone 1G, 3G, etc.) It works like a charm. The way it works is its circuitry isolates any ground loops in your stereo (depending upon how it was installed, you may have a bad ground and that can cause an annoying whine).

HIGHLY recommended for anyone who wants to listen to their music and charge at the same time.
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Verified Purchase
Completely eliminated the ground noise I was getting from the Belkin Bluetooth receiver I bought to get music and hand free calls over my car stereo.
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Verified Purchase
I have an old Dell PC in my living room that I'm using as a DVR. I had a line out from the sound card to an Onkyo receiver hooked up to the TV. Unfortunately, there was an annoying hum. I plugged this in between the sound card and the receiver and the hum went away. Simple as that.
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Verified Purchase
I have a 2006 Acura with a GTA car kit and the alternator whine while charging was bugging me to the extreme. After reading the reviews, I still had concerns about this device.

1) Will it work "backwards"?
2) Will it attenuate sound?

So here's what I discovered:
1) It most definitely works "backwards". Since the car kit necessitates me placing the output from my phone into the "input" side of the device, I really had no choice on how to "route" the signal. Immediately I noticed a tremendous improvement. The whine is still there, but I need to turn the volume up to 30 to hear it at all during a pause in playback. Since I normally listen at 10-15 which is plenty loud for me, this was a non-issue. It did what I needed it to do perfectly, the whine is not audible at idle during silence between tracks, the whine is not audible at 60+ MPH during silence between tracks.

2) This was the big concern for me as several reviews mentioned this cut audio and killed frequency response. The music was just as loud, and using the "8 Mile" soundtrack as my testing album, bass response was just the same, deep and powerful. Highs were crisp and clear. This device did not attenuate sound at all.

The only thing is that the jack sleeve is a bit thick to ensure a solid insertion into my phone's headphone jack with the case on. So I need to remove the case in order to ensure a good connection. I almost docked a star because of this, but that is not really a flaw with the device. If you have a loud whine while charging your phone and listening via Aux-In and are on the fence about this device, don't be. It works, and works great.
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Verified Purchase
2/7/2013
Pro:
1. Removes static
2. Decent cord length

Con:
1. Muffles sound.
2. Does not work well if trying to use the stereo system as a hands-free phone device. The other end hears screeching feedback.
3. Male to female connector means you still need your own audio cable to compliment this.

I bought this to remove the static sound when my phone is playing music while charging. This magically turned it into a silent audio experience. I don't mind the audio being muffled since I'm not into the high fidelity audio stuff. However, I used an audio cable with a built-in microphone button to turn my stereo system into a hands-free calling system. This device kills that feature completely as the person on the other end hears nothing but feedback when they talk - Four stars

Update: 3/6/2013 - Exactly 3 years and one month later -
I recently bought a Bluetooth receiver to use as a hands-free device in the car. It works well enough, except for the constant static hiss because the receiver uses the car's USB power. So I dug this unit up from storage and chained it between the Bluetooth receiver and the stereo system, and the hiss miraculously disappeared, without any loss of sound quality experienced using the direct wired method. I changed the rating to 5 stars for that.
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Verified Purchase
I finally found a good use for this device. I'm converting a digital output from my DVD Player/Burner into stereo RCA output, and run 35 feet to my receiver. at first there was a very bad "Buzz or Hum" in the signal, and I thought I may have a bad cord, but after much checking realized that wasn't the problem. Then I remembered I had the PAC SNI-1/3.5-mm Ground Loop Noise Isolator. found the right adapters and pugged it in. I couldn't believe the difference. No "Buzz or Hum" and had a very strong and detailed signal from my DVD/Burner to my receiver. I'm very pleased to have found a place for this isolator, and that I could finish this project, sounding better then before.
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