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 Systems B65N High Level to RCA Converter for Car Sound Systems - Ground Loop Isolator for Crossover Stereo Equalizer Amplifier Subwoofer.

BOSS Audio Systems B65N High Level to RCA Converter for Car Sound Systems - Ground Loop Isolator for Crossover Stereo Equalizer Amplifier Subwoofer.

Product ID: 105129976

Details

Colour
Silver
Compatible Devices
Speaker
Connector Type
RCA
Item dimensions L x W x H
8.6 x 3.8 x
Specific Uses For Product
Car Audio &

🔊2-Channel High-Level to Low-Level Conversion

🔗Gold-Plated RCA for Superior Signal Transfer

🎚️Adjustable Input Sensitivity per Channel

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Description

🎵 Elevate your car audio game—because your ride deserves to sound as sharp as you look.

PRECISION AUDIO CONTROL - Fine-tune input sensitivity on each channel for crystal-clear, distortion-free audio tailored to your ride.
DUAL CHANNEL VERSATILITY - Supports 2-channel systems, perfect for upgrading your car stereo with subwoofers or amplifiers.
PREMIUM SIGNAL INTEGRITY - Gold-plated RCA connectors ensure minimal signal loss and maximum audio fidelity—hear every detail.
PLUG AND PLAY INSTALLATION - Designed for quick setup with your existing car audio components—no tech headaches, just pure sound.
SEAMLESS SPEAKER TO AMPLIFIER INTEGRATION - Convert high-level speaker outputs to low-level RCA inputs effortlessly, unlocking premium sound upgrades.

The BOSS Audio Systems B65N is a 2-channel high-level to low-level RCA converter designed to bridge your car stereo with amplifiers or subwoofers. Featuring adjustable input sensitivity per channel and gold-plated RCA connectors, it ensures superior signal transfer and customizable sound quality for an enhanced in-car audio experience.

Specifications

ASIN	B000LP4RMQ
Brand	BOSS Audio Systems
Brand Name	BOSS Audio Systems
Compatible Devices	speaker
Customer Reviews	4.3 out of 5 stars 1,667 Reviews
Global Trade Identification Number	00791489170062
Interface	RCA
Interface Type	RCA
Item Weight	113 g
Manufacturer	BOSS AUDIO SYSTEMS
Material	Bamboo-derived rayon
Material Type	Bamboo-derived rayon
Model Number	B65N
Number of Channels	2
Part Number	B65N
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

R**N

Mast

Nice

7.02.2019

N**E

Good Product

Overall good quality. However, gave 1 star less as one of the LOCs developed some fault after 15 days of connecting. Rear right speaker was losing connection on and off. Hence, had to buy one more LOC and replace the faulty one.

11.03.2019

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

A**D

Sound is good

Good

20.09.2025

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10362 som

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In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Kyrgyzstan.

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TrustScore 4.5 | 7,300+ reviews

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