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BOSS Audio Systems Ground Loop Isolator B25N noise Filter for Car Audio Systems

4.0 4.0 out of 5 stars 4,473 ratings

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Ground Loop Isolator

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Item Dimensions LxWxH 3.38 x 1.5 x 1.5 inches
Manufacturer Boss Audio Systems, Inc.
Mounting Type Surface Mount
Brand BOSS Audio Systems
Number of Channels 2

About this item

  • Reduces High Pitched Whine Alternator Noise caused by the car's electrical system
  • Ground Loop Isolator Noise Filter
  • Always Use High Quality RCA Cables for your Audio System
  • Dimensions: 3.4 x 1.5 x 1.5, Unit Weight: .30 Lbs. Tips: Ground each amplifier independently. Same thing if you have added stiffening capacitors, go to a separate ground for the cap

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Legal Disclaimer

This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.


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Product Description

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Noise Filters

Noise Filter for Car Audio Systems - Ground Loop Isolator

B25N

Features

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What's in the box

  • BOSS Audio Systems Ground Loop Isolator B25N noise Filter for Car Audio Systems
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    Product Warranty: For warranty information about this product, please click here

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    BOSS Audio Systems Ground Loop Isolator B25N noise Filter for Car Audio Systems


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    Customer reviews

    4 out of 5 stars
    4 out of 5
    4,473 global ratings

    Customers say

    Customers like the ease of installation and value of the electronic component amplifier. They mention that it's really simple to install, with decent instructions. Some complain about the material, signal strength, and wiring. Opinions are mixed on noise, performance, and quality.

    AI-generated from the text of customer reviews

    104 customers mention101 positive3 negative

    Customers find the installation process of the electronic component amplifier to be easy. They mention that the instructions are decent, and the product is extremely easy to connect into the system. Some say that the product works great and saves them a lot of frustration.

    "...The Boss converter, exemplary in low cost and simplicity, is a perfect Hi-Fi level converter with no noise and no distortion in my listening..." Read more

    "...It took me less than a minute to install. It's a plug and play thing so no tools necessary. And BAM! The low humming sound was GONE!..." Read more

    "Got most of the hum out of my car stereo from my deck to the amps. Easy install." Read more

    "...It's really simple to install. But it dropped the volume by about 60%...." Read more

    84 customers mention84 positive0 negative

    Customers appreciate the value of the electronic component amplifier. They say it's well worth the price, and works effectively. Some mention that it'll fix their problem cheaply.

    "...AKA, this product fixed my problem cheaply and effectively...." Read more

    "...The Boss converter, exemplary in low cost and simplicity, is a perfect Hi-Fi level converter with no noise and no distortion in my listening..." Read more

    "...Great price for the product, and because of that I was a little scared because I had never dealt with "Boss Audio" but I figured that it was..." Read more

    "...I bought it because it was inexpensive and wanted to see if it made any difference before I bought a better, pricier, brandname, etc... box to do..." Read more

    519 customers mention301 positive218 negative

    Customers are mixed about the noise of the electronic component amplifier. Some mention that it removes any noticeable audio noise, while others say that it creates an awful noise.

    "This item solved the whine issue with my after-market vehicle amplifier." Read more

    "...After about 18 months one day a low humming started, however it is only present when the car is on, and with or without the audio being on...." Read more

    "It removed the engine noise from my aftermarket unit." Read more

    "...The whine is gone! I think that this is one of those items that may or may not work due to the severity of the ground loop...." Read more

    409 customers mention284 positive125 negative

    Customers are mixed about the performance of the electronic component amplifier. Some mention that it works well, while others say that it prevents it from working correctly. Some say that the signal is not sent through the amplifier, preventing it from functioning properly. Some customers also say that after a few weeks, the amplifier stopped working. Overall, the opinions are mixed and the product is recommended for DIY enthusiasts.

    "Installed a backup camera and monitor in my older car. All worked well, except there was a lot of noise on the monitor...." Read more

    "...For reference to others, this works perfectly well on home A/V setups as well as automotive, although this product only addresses one specific type..." Read more

    "...noise was still there but more tolerable but the machine's performance was significantly diminished.. Frustrated with performance I went back up in..." Read more

    "Worked well for me. Alternator whine - GONE!!" Read more

    225 customers mention110 positive115 negative

    Customers are mixed about the quality of the electronic component amplifier. Some mention that it has a nice, clean sound, and is amazing. However, others say that it feels extremely cheap, and has horrible quality.

    "...From what I have seen the device is made very cheaply and not able to handle being touched once installed...." Read more

    "These are amazing!!!! I have always liked BOSS products but I was skeptical of these when read the reviews. So let me give you short before the long...." Read more

    "...battery and had the same whine which leads me to believe it is the cheap amps...." Read more

    "...It's a great looking unit and it's just not designed for this application. It is designed to work on audio cables...." Read more

    42 customers mention3 positive39 negative

    Customers are dissatisfied with the material of the electronic component amplifier. They mention that the housing is cheap plastic designed to look like metal, the cover is also low grade plastic, and the bottom and case are made of plastic. The shiny plastic definitely makes it feel cheap, and it's just a chrome plated plastic case designed to looks like metal.

    "...care, but maybe some of you would be concerned because the casing is not made of metal as it appears to be. It's plastic...." Read more

    "...Cons:- Housing is shiny plastic...." Read more

    "...The shiny plastic definitely makes it feel cheap. They should've just gone for a more flat color instead. I mean, who wants fake chrome anyway?..." Read more

    "...The body is plastic with fake cooling fins, which is silly because there should never be enough heat to matter in this type of device...." Read more

    23 customers mention0 positive23 negative

    Customers are dissatisfied with the signal strength of the electronic component amplifier. For example, they mention that it arrived with one channel inoperable, the channels were crossed, and the right channel just dropped out. That said, some say the channels are very clearly not isolated and cause more noise when both channels go through the product.

    "...However, for some reason, the other channel doesn't work, and results in whisper quiet audio from that side." Read more

    "...I believe they reversed left and right channels (I need to verify this, can't really remember) but a quick visit to youtube for a stereo test on the..." Read more

    "...The only minor issue was the channels were crossed so the white input connected to the red output and vice versa...." Read more

    "...My complaint is that the left and right channels actually switch in the box. So the red wire on one end goes to the white on the other end...." Read more

    19 customers mention3 positive16 negative

    Customers are dissatisfied with the wiring of the electronic component amplifier. They mention that the wires on the inside are not hooked up properly, the wiring is a bit wimpy, and the schematics are odd. They also say that the cables were backwards on one of the outputs and that one of them was not connected.

    "...One of the female jacks on one of them will not allow a coaxial cable to fit all the way in and no signal is sent through, preventing it from..." Read more

    "...And don't try telling me that it needs to be grounded as well with no ground wire and plastic housing...." Read more

    "This made my ground loop even worse. Opened it up to find one of the leads was not connected. Threw it into the trash where it belongs." Read more

    "...unaffected, sound quality is unchanged.. But one of the lead pairs is wired backwards...What comes in on red goes out on white, and vice-versa...." Read more

    cost-effective solution for ground-loop problems
    5 Stars
    cost-effective solution for ground-loop problems
    I was somewhat skeptical of the product given it's price-point, but it did work very well to significantly reduce ground loop noise originating from the RCA signal on a PC to active speaker setup. There is still some noise that is perceptible from very close to the speaker, but it has gone from something that really bothered me constantly to a noise that I can only perceive if I listen from very close to the speaker system. AKA, this product fixed my problem cheaply and effectively. Per the picture, the product is also lightweight and can be tucked away off the ground with normal cable management.For reference to others, this works perfectly well on home A/V setups as well as automotive, although this product only addresses one specific type of problem, which may not be your problem. Also, you may need to use more than one if you have multiple analog connections creating a ground loop.
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    Top reviews from the United States

    Reviewed in the United States on March 20, 2024
    Style: Ground Loop IsolatorVerified Purchase
    Reviewed in the United States on May 31, 2022
    Style: Ground Loop IsolatorVerified Purchase
    8 people found this helpful
    Report
    Reviewed in the United States on June 3, 2014
    Style: Noise FilterVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on April 11, 2023
    Style: Ground Loop IsolatorVerified Purchase
    One person found this helpful
    Report

    Top reviews from other countries

    Translate all reviews to English
    HectorJT
    5.0 out of 5 stars Excelente producto
    Reviewed in Mexico on March 7, 2023
    Style: Ground Loop IsolatorVerified Purchase
    Peppe
    4.0 out of 5 stars Antidisturbo stereo
    Reviewed in Italy on November 19, 2023
    Style: Ground Loop IsolatorVerified Purchase
    Alex Gutiérrez
    5.0 out of 5 stars Funciona perfecto
    Reviewed in Spain on June 17, 2023
    Style: Ground Loop IsolatorVerified Purchase
    Giulia De Rossi
    5.0 out of 5 stars Ottimo
    Reviewed in Italy on April 21, 2021
    Style: Noise FilterVerified Purchase
    George Kanapitsas
    5.0 out of 5 stars Very good product
    Reviewed in Germany on December 7, 2020
    Style: Noise FilterVerified Purchase