Noise Filter | BOSS Audio B25N for Car Audio Systems

BOSS Audio B25N Ground Loop Isolator Noise Filter, Reduces High Pitched Whine Alternator Noise caused by the car’s electrical system, 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. Tips: Make sure that the amplifiers have a good ground first. Use at least 10 Gauge wires for the grounds (and power). If you have 2 or more amplifiers, DO NOT go from the ground terminal of one amp to the other and then from there to ground.

Product Features

  • 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
  • 20-Foot cord

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2 Responses to Noise Filter | BOSS Audio B25N for Car Audio Systems

  1. M Yeager says:

    Made my custom PC>Mixer>Stereo situation better once I used 2 of them Got rid of my noise in my setup. I have a PC setup with a 3.5mm to RCA “Y” type cable going into a desk mounted DJ Mixer that I use for volume control. That mixer is hooked to a Kenwood rack stereo that is always on. The Kenwood feeds my Bose Accoustimass subwoofer satellite speaker system.I was having lots of static electricity issues and it was even tuning in some radio station at times. I bought one ground loop isolator and it helped. I changed it from between the PC…

  2. HiTek21 says:

    Works but poor quality control. Its cheap and works for what I need it to do but the input and outputs are flipped around. If you connect the left channel (white) it will come out of the right channel (red) on the opposite end. I thought it was just the one unit but I bought 14 more of these and so far tested 5 in a row and all 5 have the inputs and outputs wired backwards.Not a big deal just flip the wires around but that’s poor quality control at the factory. For someone like me and other people who may be…