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 B25N Car Sound Noise Filter, Ground Loop Isolator

BOSS Audio Systems B25N Car Sound Noise Filter, Ground Loop Isolator

Product ID: 3459241

Details

Brand
BOSS Audio
Item dimensions L x W x H
3.38 x 1.5 x
Manufacturer
BOSS Audio
Mounting Type
Surface Mount
Number of Channels
2

📏Compact 3.4x1.5x1.5 inch design

🔇Eliminates high-pitched alternator whine

🔌Ground loop isolator for clean signal

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Description

🎧 Clear sound, zero noise—because your music deserves the spotlight.

MULTI USE MAGIC - Perfect for car audio or home studio setups—your secret weapon against hum and buzz.
PLUG PLAY PEACE - Effortless installation with universal RCA compatibility—no tech degree required.
COMPACT POWERHOUSE - Small footprint fits anywhere, delivering big noise reduction without bulk.
SILENCE THE STATIC - Say goodbye to that annoying alternator whine ruining your drive or studio session.
AUDIOPHILE APPROVED - Trusted by pros and enthusiasts alike to preserve pure sound clarity.

The BOSS Audio Systems B25N Noise Filter is a compact ground loop isolator designed to eliminate high-pitched alternator noise and electrical hum from car audio systems and home setups. Featuring a durable build and easy RCA connectivity, it ensures crystal-clear sound by isolating and filtering unwanted interference, backed by a 3-year warranty and trusted by both audiophiles and professionals.

Specifications

ASIN	B000LP4RMG
Best Sellers Rank	#15 in Car Amplifier Noise Filters
Brand Name	BOSS Audio Systems
Customer Reviews	3.8 3.8 out of 5 stars (2,657)
Global Trade Identification Number	00791489170055
Included Components	BOSS Audio Systems Ground Loop Isolator B25N noise Filter for Car Audio Systems
Item Dimensions	3.38 x 1.5 x 1.5 inches
Item Weight	4 ounces
Manufacturer	BOSS Audio Systems
Material Type	Metal, Plastic
Model	B25N
Mounting Type	Surface Mount
Number of Channels	2
Package Type Name	Standard_packaging
Part Number	B25N
UPC	809187135679 163121368371 809386486756 019372806240 132018222775 804066817783 791489170055 807031767632 115971573498 808112581604 808112397250 978654254783
Unit Count	1 Count
Warranty Description	3 Year Warranty

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AR$98534

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In stock

Sold byAmazon ArgentinaDelivered 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 Argentina.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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