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

Boss Audio Systems B65n High Level To Rca Converter Noise

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Description

🎧 Elevate your car audio game—hear every detail, skip the noise!

COMPACT POWERHOUSE - Sleek silver design fits discreetly in your car without adding bulk or weight.
NOISE FREE LISTENING - Built-in noise filter ensures crystal-clear sound, banishing unwanted static and hum.
PLUG PLAY SIMPLICITY - Quick, no-fuss installation with just four wires—get your system upgraded in minutes.
CUSTOMIZABLE SOUND CONTROL - Fine-tune your input sensitivity to eliminate distortion and optimize audio performance.
SEAMLESS AUDIO INTEGRATION - Effortlessly converts high-level speaker signals to RCA for premium sound clarity.

The BOSS Audio Systems B65N is a high-level to RCA impedance converter with an adjustable input sensitivity and built-in noise filter, designed to enhance car audio systems by delivering clear, distortion-free sound. Compact and lightweight, it installs easily and is compatible with amplifiers and headphones, making it a must-have upgrade for audiophiles seeking superior in-car audio performance.

Specifications

ASIN	B000LP4RMQ
Best Sellers Rank	#47,562 in Electronics ( See Top 100 in Electronics ) #23 in Car Amplifier Noise Filters
Brand	BOSS Audio Systems
Built-In Media	User Manual
Color	Silver
Colour	Silver
Compatible Devices	Amplifier, Headphone
Compatible devices	Amplifier, Headphone
Connector Type	RCA
Connector type	RCA
Customer Reviews	4.3 out of 5 stars 1,672 Reviews
Finish	Rca
Global Trade Identification Number	00791489170062
Input Voltage	240 Volts
Item Dimensions	8.6 x 3.8 x 3.8 centimeters
Item Type Name	BOSS Audio Systems B65N High Level to RCA Converter Noise Filter for Car Audio Systems
Item Weight	113 g
Item dimensions L x W x H	8.6 x 3.8 x 3.8 centimeters
Manufacturer	BOSS Audio Systems
Mfr Part Number	B65N
Model Number	B65N
Number of Items	1
Number of Ports	2
Package Quantity	1
Power Plug Type	No Plug
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	Car
Specific uses for product	Car
UPC	115971572439 613815587897 791489170062 872182707028 172304208281 100010960445 829429302348 132018191132
Unit Count	1 Count

Reviews

A**D

Sound is good

Good

20.09.2025

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

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

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