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

🔊 Cut the noise, keep the vibe — BOSS B25N makes every beat pure!

SILENCE THE STATIC - Eradicates annoying alternator and electrical noise for crystal-clear audio.
PLUG PLAY SIMPLICITY - Compact, surface-mount design fits seamlessly into any car or home audio setup.
UNIVERSAL COMPATIBILITY - Works flawlessly with car stereos, home audio, and professional studio gear alike.
BUDGET FRIENDLY BRILLIANCE - Premium noise filtering without breaking the bank—pro-level sound for under $10.
AUDIOPHILE APPROVED CLARITY - Preserves full audio fidelity with zero signal loss—hear your music, not the hum.

The BOSS Audio Systems B25N Ground Loop Isolator is a compact, easy-to-install noise filter designed to eliminate high-pitched alternator whine and ground loop hum from car and home audio systems. Measuring just 3.4 x 1.5 x 1.5 inches and weighing 0.3 lbs, it ensures pristine sound quality without signal loss. Trusted by audiophiles and professionals alike, this affordable device delivers studio-grade noise reduction, enhancing your listening experience across all setups.

Specifications

ASIN	B000LP4RMG
Best Sellers Rank	#19 in Car Amplifier Noise Filters
Brand	BOSS Audio Systems
Brand Name	BOSS Audio Systems
Customer Reviews	3.8 out of 5 stars 2,662 Reviews
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
Item dimensions L x W x H	3.38 x 1.5 x 1.5 inches
Manufacturer	BOSS Audio Systems
Material Type	Metal, Plastic
Model	B25N
Mounting Type	Surface Mount
Number of Channels	2
Number of Items	1
Number of Packs	1
Package Type Name	Standard_packaging
Part Number	B25N
UPC	809187135679 163121368371 809386486756 132018222775 019372806240 804066817783 791489170055 807031767632 115971573498 808112581604 808112397250 978654254783
Unit Count	1 Count
Warranty Description	3 Year Warranty

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538 DH

Duties & taxes included

In stock

Sold byAmazon MoroccoDelivered 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 Morocco.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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