can someone explane to me what this does as if i were a complete idiot?

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.

Can I insert this filter between my power amp and preamp in my home audio system to fix the hum problem?

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.

Will this eliminate the buzz between my record player and receiver?

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.

Will this work for a CB radio?

sure, it filters out noise from the power wire

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Boss Audio Speaker to Line Output Converter

Boss Audio Speaker to Line Output Converter

Product ID: 48463734

Details

Brand
BOSS Audio
Interface type
RCA
Material
Plastic
Number of channels
2

📏Compact design

🔊Speaker output conversion

⚙️Dual gain control

Description

🎶 Elevate Your Audio Game!

EFFORTLESS SETUP - Plug-and-play design means you can focus on enjoying your music, not troubleshooting.
PRECISION CONTROL - Two output adjustments allow for perfect gain matching, tailored to your needs.
COMPACT CONVENIENT - Small size ensures easy installation in any setup without clutter.
TRANSFORM YOUR SOUND - Seamlessly converts speaker output to line-level for pristine audio quality.
VERSATILE COMPATIBILITY - Works with a variety of audio systems, making it a must-have for any audiophile.

The Boss Audio Speaker to Line Output Converter is a compact device designed to convert speaker output to line-level output, featuring dual output adjustments for precise gain matching, making it an essential tool for enhancing your audio experience.

Specifications

ASIN	B000LP4RMQ
Audio Output Mode	Line Level
Audio output mode	Line Level
Best Sellers Rank	232,837 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 546 in Digital-Analog Converters
Brand	BOSS Audio Systems
Compatible Devices	Car Audio Systems
Customer Reviews	4.3 out of 5 stars 1,668 Reviews
Global Trade Identification Number	00791489170062
Included Components	User Manual
Interface	RCA
Interface type	RCA
Item Type Name	BOSS Audio Systems B65N High Level to RCA Converter Noise Filter for Car Audio Systems
Item Weight	0.25 Pounds
Manufacturer	Boss Audio
Manufacturer Part Number	B65N
Material	Plastic
Model Number	B65N
Number of Channels	2
Number of channels	2
Smart Home Compatibility	Not Smart Home Compatible
UPC	115971572439 613815587897 791489170062 872182707028 172304208281 100010960445 829429302348 132018191132 UPC 115971572439 613815587897 791489170062 872182707028 172304208281 100010960445 829429302348 132018191132 See more
Unit Count	1.0 count

Reviews

A**S

good all round

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)

17.03.2012

A**L

cool

works pretty damn well, installation was pretty easy, also regulators are nice. Not much else to say, but need to fill up words limit brrr

11.05.2013

K**E

Don’t buy

Poor quality didn’t work had to buy another from a different supplier. The inside circuit board was corroded and unusable. Poor product.

12.11.2017

S**N

Bastante bien

Hace su trabajo

16.04.2026

A**I

الانتباه وقت التركيب لاسلاك الموجب والسالب

ممتاز لكن اعتقد ان سعره ب ١٣٠ ريال كثير عليه بالامكان تعديل مستوى الصوت لكل مخرج

21.12.2025

A**I

Good Audio tool

Used to reduce an amplified signal to line level in order to provide a new control zone in a restaurant outdoor patio. No distortion, virtually inexistent delay, no static noise.

7.12.2025

R**N

Mast

Nice

7.02.2019

A**D

Sound is good

Good

20.09.2025

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