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- #2 in Car Amplifier Noise Filters
Product Description
Noise Filters
Noise Filter for Car Audio Systems - Ground Loop Isolator
B25N
Neil Johnson
Reviewed in the United States on February 6, 2025
Product did not remove buzz in home stereo zone 2 line out ground loop. Also had been opened previous to being sent to me and taped back shut. When hooked up the buzz actually got significantly louder. Returned item.
Medusa0703
Reviewed in Italy on November 18, 2024
Ok
Linda
Reviewed in the United States on April 11, 2023
Installed a backup camera and monitor in my older car. All worked well, except there was a lot of noise on the monitor. Tried this ground loop isolating transformer on the video cable that connects the backup camera to the monitor but it did not allow video to pass thru. Then I tried putting it on the power cable and I saw no improvement. It's a great looking unit and it's just not designed for this application. It is designed to work on audio cables. I ended up installing small ferrite cores on the video cable, and that solved most of the video noise problem.
Cassie
Reviewed in the United States on May 31, 2022
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. Buy them if you have static, buzz, or noise in your system. I installed a high quality sound system in my 1982 corvette. Bought all the harnesses and used retro sounds laguna beach radio. When I ran the rca cables to the amp I ran them up the center of the car as that’s the easiest and with a 40 year old car you want to avoid as many clips as possible. Well grounding on a 40 yr old fiberglass car is more difficult then you would think. So I grounded the radio through the factory harness with the applicable harness for my radio which is built specifically for this car. I also grounded the amp right to the battery as it’s located in the back right next to where I hid the amp. All sounded good until I started the car and got an abnormal buzz hum and just awful noise that would whine up with the rpm and would disappear after I had the radio at an ear blistering level. Well I was ready to try anything and found these. I didn’t think 2 $15 parts would fix my issue but figured “ hey if they don’t work I’ll return them and try something else” so I installed them today right after they got off the truck and before the Amazon drive could make it out of my driveway. These eliminated all the noise completely and took me 2 mins to hook up two sets. I installed them at the amp as I may be getting interference from other issues of running up the center of the car. But man does that system scream and what’s nice is I can listen at low volumes with out having to listen to that horrible buzz. I highly recommend these and if you read this review stop searching and just buy these. I will post a video of the difference once I have a chance.
Giulia De Rossi
Reviewed in Italy on April 21, 2021
Perfetto per impianto a due uscite! Finalmente ho potuto rimettere il subwoofer in macchina! Rispetto ad altri più costosi questo è perfetto qualità prezzo
Ramzaan khan
Reviewed in India on February 7, 2019
Nice
Wilson
Reviewed in the United Kingdom on November 9, 2019
Great item and fast delivery !!
F.A.A.A.
Reviewed in the United States on November 13, 2015
TEN STARS! TWENTY STARS! PERFECT FOR STUDIO USE!This comes from a professional audio engineer and music producer.Read on so you understand the miraculous level of goodness this little thing packs for $8To give you an idea of the level of noise I was getting in my headphones, I have a 10 USB port hub, with a Roland Quad Capture, a Kaoss Pad, an Arturia Microbrute (ANALOG synth), Panorama P4 MIDI Controller (takes two USB ports), a Mininova, my typing keyboard, my mouse, and outside of the hub on the three remaining ports, an external hard drive, a laptop cooling pad and a Pioneer DJ Controller.Since my soundcard as amazing as it is only has two inputs, I have the Microbrute routed through the Mininova (unbalanced), the Mininova routed through the Kaoss Pad (unbalanced), and the output of the Kaoss Pad (unbalanced) to the two inputs of the soundcard for stereo. All three connected via USB with the rest of the stuff. Needless to say, the amount of hum I was getting was insane to the point I desisted from recording anything for a bit and stuck to soft synths, leaving the hardware for ornamental purposes and your occasional sound I had to filter the hell out of.I bought two of these BOSS things because I thought I could need more, and had all sorts of premium TRS cables, stereo DI Boxes and what have you saved for later on my cart, ready to buy them in case this didn't work, but since it was $8 I thought it wouldn't hurt to try.In short: with all that mess, ALL I DID WAS PLUG IT TO THE KAOSS PAD OUTPUT AND ALL THE HUM IS GONE.ALL OF IT.I even turned up all of the volume input and output knobs just to see if there was anything left. Nothing. Just pure, beautiful, analog hiss. No hum. Nothing.This thing saved me hundreds of dollars in USB filters, hum filters and cables, and all I've got is a bunch of cheap RCAs because all outputs and inputs between these synths are unbalanced. Also, don't fall for the RCA marketing hype. No matter how cool an RCA cable looks, granted some will last more than others, but all of them produce considerable noise.Thank you BOSS for such an amazing product!P.S. Just so you know, I didn't 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. But that was not a problem for me. Not sure how it would work in a car though.
Alison Purkiss
Reviewed in the United Kingdom on March 17, 2012
came quickly, fully packaged, easy to fit (just 2 wires for left and 2 for right) just wired in and worked and sounds good (using with nissan almera se stock cd player)
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