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If you have noise interference or want to eliminate engine whine and other annoying sounds, then we have your solution. Ground loop isolators, RCA noise filters, and noise killers help to eliminate engine whine and other distracting in-line noises.
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Noise Filters

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Eliminates Ground Loop Noise with iPod / Zune / iRiver and Others through 3.5mm Headphone Connection
Free Flat Rate Shipping within the entire USA!
Eliminates Ground Loop Noise when you plug in a portable audio player using a 3.5mm connection (aux input) on your stereo.
$11.95
Shipping: FREE
To the US • other rates
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RCA Noise Filter
Free Flat Rate Shipping within the 48 states
RCA Noise Filter • Close to perfect response of +/- .03 dB from 20 Hz - 20kHz • Eliminates ground loop noise • Reduces most noise
$11.99
Shipping: FREE
To the US 48 • other rates
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12 Amp Noise Filter
Free Flat Rate Shipping within the 48 states
12 Amp Wide Spectrum Noise Filter • Supresses Alternator and Ignition Noise • Helps Buffer Rapid Trainsient Power Drops
$8.99
Shipping: FREE
To the US 48 • other rates
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Ground Loop Isolator (PNF-100)
Free Flat Rate Shipping within the entire USA!
Ground loop isolator • Signal noise elimination • Cylindrical metal case with heat shrink tube • 30 Watt Input • 60 Watt Max Input • Frequency Response: 20-30,000 Hz
$6.99
Shipping: FREE
To the US • other rates
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Monster Silencer In-Line Noise Reduction Module
Free Flat Rate Shipping within the 48 states
Monster Silencer In-Line Noise Reduction Module • Advanced Audiophile Parts • In-line Design • DoubleHelix Technology • 24k Gold Contact RCA Connectors • XLN Xtra Low Noise Technology • 6-Cut Turbine Connectors
$35.00
Shipping: FREE
To the US 48 • other rates
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Inline Power Noise Filter
Free Flat Rate Shipping within the entire USA!
Digital Power Noise Filter • Isolates Ground Loops Caused by Multiple Accessories Grounding Points • Actively Cleans Noise Generated from the Positive Voltage Line
$6.99
Shipping: FREE
To the US • other rates
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Digital RCA Ground Loop Isolator
Free Flat Rate Shipping within the entire USA!
2-Channel RCA Ground Loop Isolator • Eliminates Engine Noise • Reversible Input and Output Installation
$8.99
Shipping: FREE
To the US • other rates
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20 AMP In-Line Power Lead Noise Filter with Heavy-Gauge Wire Leads
Free Flat Rate Shipping within the entire USA!
20 AMP In-Line Power Lead Noise Filter • Eliminates Noise Generated by the Alternator and Charging System of the Vehicle • Heavy Gauge Wire Leads • Heavy-Duty Potted Enclosures • Quick and Easy to Install
$11.78
Shipping: FREE
To the US • other rates
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30 Amp Ground Loop Isolator Noise Filter
Free Flat Rate Shipping within the entire USA!
30 Amp Ground Loop Isolator Noise Filter • Gold-Plated RCA Connections • Retains Sound Quality • Reduces Unwanted Noise • Two Channel RCA Connection • Durable Barrel Case
$6.99
Shipping: FREE
To the US • other rates
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12 AMP In-Line Power Lead Noise Filter with Heavy-Gauge Wire Leads
Free Flat Rate Shipping within the entire USA!
12 AMP In-Line Power Lead Noise Filter • Eliminates Noise Generated by the Alternator and Charging System of the Vehicle • Heavy Gauge Wire Leads • Heavy-Duty Potted Enclosures • Quick and Easy to Install
$10.59
Shipping: FREE
To the US • other rates
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In-Line RCA Audio Ground Loop Isolator
Free Flat Rate Shipping within the entire USA!
In-Line RCA Audio Ground Loop Isolator • Used to Eliminate Loops That Are Created When Units Are Not Properly Grounded • Compatible with Receivers, Equalizers and Amplifiers • RCA Male & Female Connections
$8.99
Shipping: FREE
To the US • other rates
Availability: Only 1 left in stock
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Omni Directional RCA In-Line Noise Filter
Free Flat Rate Shipping within the entire USA!
Omni Directional RCA In-Line Noise Filter • Used to Filter Out Noisy RF Signals from RCA Audio Lines • Prevents RF Signals from Interfering with the Pure Sound of your Audio Device
$13.99
Shipping: FREE
To the US • other rates
Availability: Only 1 left in stock
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Deluxe 10 Amp Noise Filter
Free Flat Rate Shipping within the 48 states
Eliminates System Noise Generated in The Vehicles Power System • For 10 Amp Systems • Works With Most Vehicle Power Systems
$11.96
Shipping: FREE
To the US 48 • other rates
Availability: Limited stock
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5 AMP In-Line Power Lead Noise Filter with Heavy-Gauge Wire Leads
Free Flat Rate Shipping within the entire USA!
5 AMP In-Line Power Lead Noise Filter • Eliminates Noise Generated by the Alternator and Charging System of the Vehicle • Heavy Gauge Wire Leads • Heavy-Duty Potted Enclosure • Quick and Easy Installation
$9.99
Shipping: FREE
To the US • other rates
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Ground Loop Isolator
Ground Loop Isolator • RCA Isolator
$4.99
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Adjustable Ground Loop Isolator
Free Flat Rate Shipping within the entire USA!
Adjustable Ground loop isolator • Signal noise elimination • Cylindrical metal case with heat shrink tube • 30 Watt Input • 50 Watt Max Input • Frequency Response: 20-30,000 Hz
$12.99
Shipping: FREE
To the US • other rates
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Turn On & Turn Off Pop Eliminator
Turn On & Turn Off Pop Eliminator • Delays the Amplifiers Turn-On/Turn-Off Lead 1 Second • Eliminates Unwanted Pops from the Amplifier when Turning On/Off • Durable Plastic Casing
$6.99
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RCA Ground Loop Isolator/Noise Filter
Free Flat Rate Shipping within the entire USA!
Ground loop isolator • Signal noise elimination • Cylindrical metal case with heat shrink tube • 30 Watt Input • 50 Watt Max Input • Frequency Response: 20-30,000 Hz
$9.99
Shipping: FREE
To the US • other rates
Availability: Only 1 left in stock
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200 Amp Ground Loop Isolator Noise Filter
200 Amp Ground Loop Isolator Noise Filter • Chrome-Plated RCA Connections • Retains Sound Quality • Reduces Unwanted Noise • Two Channel RCA Connection • Durable Metal Chassis Case
$6.99
Availability: Only 1 left in stock
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60 Amp Ground Loop Isolator Noise Filter
60 Amp Ground Loop Isolator Noise Filter • Gold-Plated RCA Connections • Retains Sound Quality • Reduces Unwanted Noise • Two Channel RCA Connection • Durable Plastic Case
$5.99
Availability: Limited stock
Items per page: 20 50 100
Related Categories
Sound Dampening
One of the best ways to enhance your car's audio system is by adding sound dampening material. Vibration absorbing materials from popular brands such as Dynamat, Ballistic, and Hushmat allow you to significantly decrease road noise and vibrations from your car.

Noise Filters Information

Some car stereos have a loose connection or a detrimental interaction somewhere that you cannot manage to identify and eliminate. Whether it is noise interference, engine whine, or some other annoying sound, we understand that an enjoyable driving experience is not possible when your music is interrupted or corrupted. Our selection of noise filters will help you to eliminate that annoyance from frustrating car stereos to clear up your stereo’s sound.

We have ground loop isolators to cut out the whine that can occur in a number of connections. Put one in between your 3.5mm auxiliary jack and your portable MP3 player to eliminate the noise, or choose from our professional grade ground loop isolators designed to retain signal quality without cross-channel interference while eliminating noise from pre-amp outputs and into amp inputs. We even have adjustable isolators and those that feature gold components, for more sensitive car audio systems.

We also offer noise filters and in-line noise reduction components to pair with your aftermarket amps, which target engine whine and other high-frequency noise. These will not clarify the signal, but rather filter out the unwanted frequency. As with the isolators, your budget is the only limit on materials quality. We do our best to make every dollar go farther towards getting the components with the highest quality materials so that your solution will not degrade sound or signal quality.

No matter your budget, expertise level, or goals, you will find the right piece of hardware to eliminate car stereo noise in our selection. You can target problem areas inside your stereo’s connections to improve the quality of the signal, identify the general source of the problem and filter out the non-signal interference to enjoy better sound quality, and add isolators outside of the head unit. Whether or not you choose to install these components yourself, you can be sure that with the right information and proper installation, they will successfully improve your car audio experience.
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