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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🔊 Silence the noise, amplify your vibe.

PLUG PLAY SIMPLICITY - Compact and lightweight design fits seamlessly into any car audio setup without hassle.
PRO TIP FOR AUDIOPHILES - Ground each amplifier independently to maximize noise reduction and audio fidelity.
ENGINEERED FOR PRECISION - High-quality ground loop isolation ensures your music stays interference-free, even in complex electrical systems.
TRUSTED BOSS AUDIO QUALITY - From a leading brand in car audio, designed to enhance your in-car listening experience.
CRYSTAL CLEAR SOUND ALWAYS - Say goodbye to that annoying alternator whine and enjoy pure audio clarity on every drive.

The BOSS RCA Amplifier Audio Systems Ground Loop Isolator B25N is a compact noise filter designed to eliminate high-pitched alternator noise caused by your car’s electrical system. Weighing just 113 grams and measuring 3.4 x 1.5 x 1.5 inches, it ensures crystal-clear audio by isolating ground loops in your car audio setup. Ideal for professional-grade sound systems, it requires independent grounding of amplifiers for optimal performance.

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Warranty	no warranty available
Height (inches)	1.5 Inches
Width (inches)	6 Inches
Weight	0.17 Kilograms
Product Dimensions	8.59 x 3.81 x 3.81 cm; 113.4 g
Item model number	B25N
Manufacturer	Boss Audio Systems, Inc.
Item Weight	113 g

BOSS RCA Amplifier Audio Systems Ground Loop Isolator B25N noise Filter for Car Audio Systems, White

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