---
product_id: 50358232
title: "Boss Audio Ground Loop Isolator and Noise Filter"
brand: "boss audio systems"
price: "Bs.383"
currency: BOB
in_stock: false
reviews_count: 13
url: https://www.desertcart.bo/products/50358232-boss-audio-ground-loop-isolator-and-noise-filter
store_origin: BO
region: Bolivia
---

# 2-channel ground loop noise filter 2x gold-plated RCA inputs 2x gold-plated RCA outputs Boss Audio Ground Loop Isolator and Noise Filter

**Brand:** boss audio systems
**Price:** Bs.383
**Availability:** ❌ Out of Stock

## Summary

> 🔇 Silence the noise, amplify your vibe.

## Quick Answers

- **What is this?** Boss Audio Ground Loop Isolator and Noise Filter by boss audio systems
- **How much does it cost?** Bs.383 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/50358232-boss-audio-ground-loop-isolator-and-noise-filter)

## Best For

- boss audio systems enthusiasts

## Why This Product

- Trusted boss audio systems brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Compatibility:** Perfect for car subwoofers, home amplifiers, crossovers & equalizers
- • **Compact & Easy Installation:** Built-in mounting tabs for seamless setup in car or home systems
- • **Dual-Channel Noise Isolation:** Filters noise from two RCA line-level audio channels simultaneously
- • **Crystal-Clear Audio, No More Hum:** Eliminates ground loop noise & alternator whine for pristine sound
- • **Premium Gold-Plated RCA Connectors:** Ensures superior signal transfer & corrosion resistance

## Overview

The BOSS B25N Ground Loop Isolator and Noise Filter is a compact, dual-channel device designed to eliminate annoying ground loop hum and alternator whine from RCA audio systems. Featuring gold-plated RCA inputs and outputs for optimal signal quality, it’s ideal for both car and home audio setups, ensuring clean, interference-free sound with easy installation.

## Description

Product Description BOSS B25N Ground Loop Isolator and Noise Filter Features The BOSS B25N is designed to eliminate ground loop noise (usually referred to as hum) and alternator whine from two RCA line-level audio channels. Great for the car, and even for the home, where amplifiers and other electronics (such as crossovers and equalizers) are separate of the source. Built-on mounting tabs facilitate installation. Dimensions (L x W x H): 3.4" x 1.5" x 1.5". Ground loops create noticeable hum in home audio systems, and alternator whine (also known as engine noise) in car audio systems. Eliminate both with the BOSS B25N ground loop isolator. Cancels irritating ground loops, Eliminate system hum in home audio systems, Remove alternator whine in car audio systems Box Contains 1 X Ground Loop Isolator and Noise Filter

Review: works very well - works very well in eliminating all alternator whine and interference noise for my subwoofer in my car
Review: Not fit for purpose - This was not fit for purpose. It increased the humming noise almost damaged my subs.

## Features

- RCA inputs (gold-plated) x 2
- RCA output terminal (gold-plated) x 2
- 2-Channel Ground Loop Isolator Filter

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000LP4RMG |
| Best Sellers Rank | 28 in Car Amplifier Noise Filters |
| Colour | WHITE |
| Connectivity technologies | USB |
| Customer Reviews | 3.8 3.8 out of 5 stars (2,505) |
| Date First Available | 6 Dec. 2006 |
| Item Weight | 113 g |
| Item model number | B25N |
| Other display features | Wireless |
| Product Dimensions | 8.59 x 3.81 x 3.81 cm; 113.4 g |
| What’s in the box | BOSS Audio Systems Ground Loop Isolator B25N noise Filter for Car Audio Systems |

## Product Details

- **Colour:** WHITE
- **Compatible devices:** Receiver
- **Connector type:** RCA
- **Item dimensions L x W x H:** 8.6 x 3.8 x 3.8 centimetres
- **Specific uses for product:** personal

## Images

![Boss Audio Ground Loop Isolator and Noise Filter - Image 1](https://m.media-amazon.com/images/I/41VMoUIUxCL.jpg)
![Boss Audio Ground Loop Isolator and Noise Filter - Image 2](https://m.media-amazon.com/images/I/41iELGNkGUL.jpg)
![Boss Audio Ground Loop Isolator and Noise Filter - Image 3](https://m.media-amazon.com/images/I/41sZ0AkpnfL.jpg)
![Boss Audio Ground Loop Isolator and Noise Filter - Image 4](https://m.media-amazon.com/images/I/61TchapzvSL.jpg)
![Boss Audio Ground Loop Isolator and Noise Filter - Image 5](https://m.media-amazon.com/images/I/61c+qWyURVL.jpg)

## Questions & Answers

**Q: can someone explane to me what this does as if i were a complete idiot?**
A: The ground isolator removes ground noise caused  by other components in the power system of your audio devices, it does this by decoupling the amplifier from the audio source directly, wires wrapped around in a transformer allow the audio signal to pass through induction but leave the ground isolated. So any noise on the ground line is not sent to the audio input of the amplifier.

**Q: Can I insert this filter between my power amp and preamp in my home audio system to fix the hum problem?**
A: Your hum problem is likely between your preamp and one of its inputs. Disconnect each in turn to see which is the problem. Use this there.
It breaks the earth loop. 

If you put it between the pre and power amp, the hum is already in the audio signal, so it would not be effective at that point.

**Q: Will this eliminate the buzz between my record player and receiver?**
A: You can usually eliminate hum between your record player and your phono stage input by grounding the two devices together with a dedicated wire, usually built-in to the record player, which attaches to a stud on the phono preamp or stereo. Hope this helps.

**Q: Will this work for a CB radio?**
A: sure, it filters out noise from the power wire

## Customer Reviews

### ⭐⭐⭐⭐⭐ works very well
*by Z***E on 26 March 2025*

works very well in eliminating all alternator whine and interference noise for my subwoofer in my car

### ⭐ Not fit for purpose
*by A***R on 26 March 2024*

This was not fit for purpose. It increased the humming noise almost damaged my subs.

### ⭐⭐⭐⭐⭐ It worked
*by C***Y on 11 May 2025*

To my surprise this thing worked and worked well.

## Frequently Bought Together

- BOSS Audio Systems Ground Loop Isolator B25N noise Filter for Car Audio Systems
- DteeDck RCA Splitter 1 Female to 2 Male, 2 Pack - RCA Audio Video Cable Splitter Adapter, Dark Blue
- Monoprice 1.5ft Premium 2 RCA Plug/2 RCA Plug M/M 22AWG Cable - Black

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-02-21*