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BOSS Audio Systems Ground Loop Isolator B25N noise Filter for Car Audio Systems
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
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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Important information
Legal Disclaimer
This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Product Description
Noise Filters
Noise Filter for Car Audio Systems - Ground Loop Isolator
B25N
Features
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Product guides and documents
What's in the box
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Product information
Item Dimensions LxWxH | 3.38 x 1.5 x 1.5 inches |
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Manufacturer | Boss Audio Systems, Inc. |
Mounting Type | Surface Mount |
Brand | BOSS Audio Systems |
Number of Channels | 2 |
Package Type | Standard_packaging |
Material | Plastic, Metal |
Product Dimensions | 3.38 x 1.5 x 1.5 inches |
Item Weight | 4 ounces |
ASIN | B000LP4RMG |
Item model number | B25N |
Customer Reviews |
4.0 out of 5 stars |
Best Sellers Rank | #5 in Car Amplifier Noise Filters |
Is Discontinued By Manufacturer | No |
Connectivity technologies | USB |
Other display features | Wireless |
Color | WHITE |
Whats in the box | BOSS Audio Systems Ground Loop Isolator B25N noise Filter for Car Audio Systems |
Department | CAR |
Date First Available | May 10, 2008 |
Warranty & Support
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
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
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
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
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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. Started research what may be the cause, needless to say everyone is an expert from poor quality wires to head unit to issue or alternator I was sure it wasn't the alternator because there was no fluctuation in the noise level when stepping on the gas, ruled out bad wiring because no hum when the car is in accessory mode, thought maybe the AMP (Taramps) was the issue. Spoke to a few blokes who works @ Beat The Street a Coach bus Co. in FL they specialize in upgrading them to touring busses with the full works and they recommended the Isolator / noise filter - however I choose this brand because Boss has been around for a very long time. Wasn't sure so I got two of these Boss units, because of the four inputs to the amp but I only needed to filter out one of the inputs. Did this because during my troubleshooting when when I disconnected one set of the audio input to the amp the hum stopped. Now both audio inputs are connected to the amp one set via the isolator - NO HUM.
As soon as I got everything hooked up and started tuning my amp I had issues.
The two adjustment dials (left and right) are both very CHEAPLY made. I went to adjust the right one and as soon as I went to turn it (with a screwdriver) the right side cut out; The innards of the box had fallen apart. I fiddled with it (by using a screwdriver and tapping it) and got it to come back. A short trip down the road and the converter quite working again. I figured no problem so I swapped everything to the left side (I am only using one side of my stereo inputs and left the opposite side unhooked). The next day on my way to work it did it again. I got to work and fiddled with the left side this time and it came back.
Now for today. I was on my way home and noticed my sub had cut out. I pulled over and tapped on the converter box with my knuckle and as soon as I touched it the sub came back on.
From what I have seen the device is made very cheaply and not able to handle being touched once installed. If that is the case then it should be marked as such. I will be looking elsewhere for a replacement device in order to keep my stereo working.