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PAC SNI-1 RCA Ground Loop Noise Elimination Filter Isolator

US $10.90

ApproximatelyC $15.08

Condition:

New

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More than 10 available6 sold

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Located in: Colbert, Oklahoma, United States

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Estimated between Sat, May 3 and Fri, May 9 to 43230

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30 days return. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.

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eBay item number:146518050935

Last updated on Apr 14, 2025 15:00:41 EDTView all revisionsView all revisions

Item specifics

Condition: New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ... New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. See all condition definitionsopens in a new window or tab

Brand: PAC

UPC: 606523100007

About this product

Product Information

Eliminates ground loop noise between the audio source and radio. For use with portable devices that have RCA audio outputs, including pre-amp outputs.

Product Identifiers

Brand

Loop

MPN

PACSNI1

UPC

0606523100007

eBay Product ID (ePID)

151162644

Item description from the seller

About this seller

Joined Apr 2005

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Average for the last 12 months

Accurate description

5.0

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4.6

56 product ratings

46 users rated this 5 out of 5 stars
4 users rated this 4 out of 5 stars
2 users rated this 3 out of 5 stars
1 users rated this 2 out of 5 stars
3 users rated this 1 out of 5 stars

Easy to install

Easy to operate

Good value

Most relevant reviews

See all 40 reviews

by leavinlasvegas
Nov 07, 2015Top favourable review
An Easy Fix to an Alternator Whine when using Car Radio Pre-Amp Outputs
If you have an alternator that whines (ground loop noise) AND you have pre-amp outputs (RCA) to a power amplifier, then these will get rid of the noise. No extra and crazy grounding is needed. Buy two of these, one for the front speaker pair and one for the rear speaker pair. Nothing is needed for the sub-woofer if you have a sub-woofer. They are designed to be plugged in to the RCA (pre-amp) outputs for the rear and front speakers at the radio. If you have enough room behind your radio they fit nicely tucked behind or under the radio. If you have no room (like me) you can plug them in to the power amplifier (located in my trunk) at the RCA inputs for front and rear speakers BUT YOU WILL NEED to buy 4 gender changers (male to female) and 4 short male-male cables (two footers or 3 ... If you have an alternator that whines (ground loop noise) AND you have pre-amp outputs (RCA) to a power amplifier, then these will get rid of the noise. No extra and crazy grounding is needed. Buy two of these, one for the front speaker pair and one for the rear speaker pair. Nothing is needed for the sub-woofer if you have a sub-woofer. They are designed to be plugged in to the RCA (pre-amp) outputs for the rear and front speakers at the radio. If you have enough room behind your radio they fit nicely tucked behind or under the radio. If you have no room (like me) you can plug them in to the power amplifier (located in my trunk) at the RCA inputs for front and rear speakers BUT YOU WILL NEED to buy 4 gender changers (male to female) and 4 short male-male cables (two footers or 3 footers will work) and you are all set if plugging in at your amplifier. Perfect solution. Inexpensive. Very nice product. Been using them for a month and so far they are doing great.
Verified purchase: YesCondition: NewSold by: buy12volt
by allany2525
Mar 16, 2021Top critical review
Pac-SN1 noise elimination filter - Review
This isolation transformer is very good at eliminating background "Hummmm" between an external amp and my record player turntable. The down side of using it is: A) The line in connection to my amplifier loses VOLUME because of this isolation transformer, ie: it is very LOSSY. A good isolation transformer would not have so much loss in signal volume. B) It drastically cuts the amount of BASS in the audio signal coming from the OUTPUT side. I have tried reversing the input and output, but it does not solve the loss of BASS in the signal. Otherwise, it does exactly what it is supposed to do - eliminate background hum, ground loops and random, spurious noise in your amp caused by audio cables picking up RF and electrical noises in your house. If you have a good preamp/equalizer between ... This isolation transformer is very good at eliminating background "Hummmm" between an external amp and my record player turntable. The down side of using it is: A) The line in connection to my amplifier loses VOLUME because of this isolation transformer, ie: it is very LOSSY. A good isolation transformer would not have so much loss in signal volume. B) It drastically cuts the amount of BASS in the audio signal coming from the OUTPUT side. I have tried reversing the input and output, but it does not solve the loss of BASS in the signal. Otherwise, it does exactly what it is supposed to do - eliminate background hum, ground loops and random, spurious noise in your amp caused by audio cables picking up RF and electrical noises in your house. If you have a good preamp/equalizer between your input and your ampifier, you can [ mostly ] compensate for the loss of line level/Bass frequencies.
Verified purchase: YesCondition: NewSold by: usa12volt
by alteschinken
Nov 19, 2016
Works better than I expected
Since this product is advertised for solving noise in automobiles, I wasn't sure it would work for me, in a Church. I needed to connect audio from a DVD player and also a Satellite Receiver into unbalanced line level inputs on an amplifier. Directly connecting them with RCA cables was inducing a hum in the amplifier. I installed the SN-1, and immediately the noise went away. I have since used another one of these with a similar result. At another Church, RCA ports had been installed at the back of the building. A shielded coax cable was used to run the audio nearly 200 feet to the amplifier, and there was a definite hum being input, with nothing plugged into the RCA ports. The SN1 did not solve that problem, although surprisingly to me, it did reduce the hum a bit. It is not designed to ... Since this product is advertised for solving noise in automobiles, I wasn't sure it would work for me, in a Church. I needed to connect audio from a DVD player and also a Satellite Receiver into unbalanced line level inputs on an amplifier. Directly connecting them with RCA cables was inducing a hum in the amplifier. I installed the SN-1, and immediately the noise went away. I have since used another one of these with a similar result. At another Church, RCA ports had been installed at the back of the building. A shielded coax cable was used to run the audio nearly 200 feet to the amplifier, and there was a definite hum being input, with nothing plugged into the RCA ports. The SN1 did not solve that problem, although surprisingly to me, it did reduce the hum a bit. It is not designed to solve cable runs which are just too long. But it works perfectly to eliminate hum between electronic devices and an amplifier. Even in buildings, and not just cars.
Verified purchase: YesCondition: NewSold by: buy12volt
by mitchmorris89
May 05, 2018
Removed engine hum
I bought this because after I put an after market double din head unit in my 05 Tahoe the rear seating DVD player had a hum to it when driving. I installed this isolater and the hum is now completey gone. The only downside to it is that it significantly reduced the bass. But like I said I only hooked it up to the rear DVD RCAs. So the front dvd, radio, and Bluetooth etc still have bass. All in all it's worth it because now when I'm driving down the interstate, my baby girl can watch her movies without the engine hum driving me crazy.I bought this because after I put an after market double din head unit in my 05 Tahoe the rear seating DVD player had a hum to it when driving. I installed this isolater and the hum is now completey gone. The only downside to it is that it significantly reduced the bass. But like I said I only hooked it up to the rear DVD RCAs. So the front dvd, radio, and Bluetooth etc still have bass. All in all it's worth it because now when I'm driving down the interstate, my baby girl can watch her movies without the engine hum driving me crazy.
Verified purchase: YesCondition: NewSold by: buy12volt
by BLbPuebnSc6@Deleted
Jul 23, 2019
Made audio worse....
Purchased filter to correct hum on audio when the car is running. Cleared slightly until I turned on the ac. Now I have a louder noise coming from my speakers. I tried grounding both filters, made the sound worse. Noise lessened when the filters aren’t near any metal. If I don’t run the ac, no hum, but now the bass in the audio is completely gone. In the end I’ll live with the audio hum. Filters may work in some applications, but didn’t help with my setup.Purchased filter to correct hum on audio when the car is running. Cleared slightly until I turned on the ac. Now I have a louder noise coming from my speakers. I tried grounding both filters, made the sound worse. Noise lessened when the filters aren’t near any metal. If I don’t run the ac, no hum, but now the bass in the audio is completely gone. In the end I’ll live with the audio hum. Filters may work in some applications, but didn’t help with my setup.
Verified purchase: YesCondition: NewSold by: stereo-needs

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PAC SNI-1 RCA Ground Loop Noise Elimination Filter Isolator

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Item specifics

About this product

Product Information

Product Identifiers

Item description from the seller

deal_town

100% positive feedback•1.4K items sold

Detailed seller ratings

Seller feedback (415)

Product ratings and reviews

Most relevant reviews

An Easy Fix to an Alternator Whine when using Car Radio Pre-Amp Outputs

Pac-SN1 noise elimination filter - Review

Works better than I expected

Removed engine hum

Made audio worse....

More to explore:

deal_town

100% positive feedback•1.4K items sold

Detailed seller ratings

Seller feedback (415)