Tune your system to perfection with these crossovers, equalizers, and bass drivers. Search this category and improve the sound quality of your sound system.

Sound Processors

Sound Processors Q & A

For those who want the most out their car audio system, a quality sound processor is a must. After some slight adjustments, your systems will sound like it has been professionally tuned and optimized. Tune your system to perfection with these crossovers, equalizers, and bass drivers. Click here to learn more about digital sound processors and to find out which type would be best for your car audio system.
Equalizers
Crossovers
Bass Restoration & Expanders
Line Drivers
Factory Radio Sound Processors
Other Sound Processors
Digital Sound Processors
In-Dash Sound Processors

Top Sellers in Sound Processors

In-Dash Bass Maximizer and Restoration Processor (The Epicenter In-Dash) with 5-year warranty*!

• Digital Bass Reconstruction Processor
• 160dB Mircophone
• Switchable Backlight Illumination Color(Blue or Red)
• ParaBASS Equalization
• SPL Display

$189.99

IN STOCK

7-Band Car Audio Graphic Equalizer with Front 3.5mm Auxiliary Input, Rear RCA Auxiliary Input and High Level Speaker Inputs

• 6-Channel / 8-Volt RCA Outputs
• Blue Illmination
• Gold-plated contacts for optimum signal transfer
• Selectable 12dB Low-Pass Filter (60Hz or 90Hz)
• RCA and High Level Speaker Inputs

$72.99

IN STOCK

Concert Series Digital Bass Reconstruction Processor (Bass Booster Expander) with Remote & 5-year warranty*!

• Sierra White Digital Bass Reconstruction Processor
• Patented Bass Maximizer™
• 9.5Vrms Pre-amp Max Output!
• Perfect addition to all systems

$143.99

IN STOCK

Only 2 Left!

2 Channel Line Out Converter with AccuBASS & 5-year warranty*!

• Two Channels of Active Speaker Level Inputs
• AccuBASS Processing
• 9.5 Volt Pre-Amp Outs
• GTO - Signal Sensing Inputs

Add the Remote Subwoofer Control and Save 20%

$79.99

IN STOCK

  • 5.0
3 reviews

6 Channel Performance Digital Signal Processor with EQ, Crossover and Signal Delay plus 5-year warranty*!

• 6-Channel LOC Line Driver w/ 14 Band Equalizer
• Selectable Crossover Frequency: 50-500 Hz
• Frequency Response: 10-22,000Hz
• 24 dB/Octave Linkwitz-Riley Crossover

VIP Guarantee - FREE 2-Day Shipping,
10% Rewards, Extended Warranty and more!

$299.99

IN STOCK

  • 5.0
1 review

9-Band Graphic Equalizer w/ TrueTUNE Technology

• 9-Band Graphic Equalizer
• TrueTune Technology
• Removable terminal block for all input connections
• Panel Mount RCAs

$149.99

IN STOCK

  • 4.5
6 reviews

7-Band Parametric Equalizer with Subwoofer Electronic Crossover

7 Band Parametric Equalizer • Isolated PWM Power Supply • 8 Volts RMS Output • Subwoofer Outputs • Level Controls • Subwoofer Frequency Selection • 20dB Headroom • Gold-Plated RCA Input And Output Connectors

$42.99

IN STOCK

  • 5.0
1 review

4 Band Graphic Equalizer, With Subwoofer Crossover, Input gain control, Master Volume control

Front, Rear And Subwoofer Outputs • Fader Control • Subwoofer Volume Control • Subwoofer Frequency 30Hz to 250Hz Variable • Dual Color Illumination (Red, Green)

$26.84

IN STOCK

Constant Usable Bass Enhancement





$129.99

IN STOCK

  • 5.0
3 reviews

Concert Series 2-Channel 24dB-Gain Line Driver, 5 Year Warranty*!

• Concert Series Overdrive Line Driver
• High Voltage Level
• Balanced Inputs
• Low Impedance Output
• Top-Mounted Controls
• Power Supply Ground is Switchable
• Preamp Inputs and Outputs

Add the Remote Subwoofer Control and Save 20%

$119.99

IN STOCK

  • 5.0
3 reviews

Six Channel Line Out Converter with AccuBASS & 5-year warranty*!

• Six Channel Line Output Converter with AccuBASS
• Six Channels Of Active Speaker Level Inputs – Accepts Up To 400 Watts Per Channel
• AccuBASS Circuitry
• GTO Circuit – Powers Up The Lc7i When It Detects Signal On The Speaker Level Input

Add the Remote Subwoofer Control and Save 20%

$129.95

IN STOCK

7-Band Graphic Equalizer (EQS-746) with 1/2-DIN Chassis, Auxiliary Input and Selectable Low Pass Crossover

• 7-Band Rotary Equalizer
• Selectable Main AUX Inputs
• Subwoofer-Level Control
• 6-Channel/7-Volt RCA Line-Level Output
• S/N Ratio: 105dB

$71.99

IN STOCK

4 Band Pre-Amp Equalizer with Remote Subwoofer Filter and Level Control

• Inputs: dual 2 ch. source
• Low pass filter: 50Hz to 80Hz
• Maximum input voltage: 15V
• Frequency response: 10 hz to 15 khz, ±1 dB

$19.99

IN STOCK

Only 3 Left!

4-Band Pre-Amp Graphic Equalizer with Gold Plated RCA Inputs and Outputs

• 4-Band Graphic Equalizer
• Subwoofer Output
• Dual-Color Selectable Illumination
• Gold-Plated RCA Inputs and Outputs
• Bass Boost (0 - 18 dB)
• Signal to Noise Ratio: 105 dB

$27.99

IN STOCK

  • 4.3
3 reviews

2 Channel Line Driver/Line Output Converter

• 2 Channel Line Output Converter
• Excellent signal to noise ratios
• High level/low level input
• Aux input
• Adjustable gain output

$19.99

IN STOCK

7-Band Graphic EQ with Aux Input

• 7-Band Graphic Equalizer with Auxiliary Input
• Red illumination
• Master and subwoofer volume control
• Subwoofer frequency and level control
• Built-in fader control

$66.99

IN STOCK

Fully Active 2-Channel Remote Level Control and Line Driver with Pass-Through Outputs

• Fully Active, 2-Channel Remote Level Control and Line Driver with Pass-Through Outputs
• Minimizes Unwanted Noise
• Active Circuitry
• Control Knob
• Pass-Through Connection

VIP Guarantee - FREE 2-Day Shipping,
10% Rewards, Extended Warranty and more!

$59.99

IN STOCK

7-Band Graphic Equalizer, 1/2 DIN, 8V Output Line Driver

• 7-Band Graphic Equalizer
• 8V Line Driver Built-In
• Switchable Low Pass Crossover
• Gold-Plated RCA Inputs
• Subwoofer Level Control

$59.95

IN STOCK

2 Channel Line Out Converter with AccuBASS & 5-year warranty*!

• Two Channels of Active Speaker Level Inputs
• AccuBASS Processing
• 9.5 Volt Pre-Amp Outs
• GTO - Signal Sensing Inputs

$79.99

IN STOCK

  • 4.8
6 reviews

Digital Bass Processor

Digital Bass Processor • Dash Mount Remote Control • Parametric Bass Control • Output Level: 13.5 volt • Balanced Inputs • PFM Subsonic Filter • Bass Output Control

15% Off NVX RCA Interconnect Cables with Purchase!

$59.99

IN STOCK

Only 2 Left!

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Sound Processors Information

Information about Digital Sound Processors:

Most original factory stereos use preset equalization curves that are designed to get the most out of your car's factory speakers. When you upgrade to aftermarket speakers, your OEM stereo's equalizer preset curves do not adjust, resulting in under performance from your aftermarket speakers. Processors reshape the output of your factory stereo's preset equalization curves to ensure you get optimal performance out of your aftermarket amplifiers and speakers.

A parametric sound equalizer helps you tune your system to the perfect balance. These audio equalizers will also help eliminate infrasonic distortions for a crisper and clearer audio output. Adding a sound equalizer to your car will optimize your system's performance.

Electronic crossovers divide your music into high, low and midrange frequency ranges. Some of the units we carry are combinations of both stereo crossovers and stereo equalizers. Call us today if you need help choosing the right combo for your setup and budget.

Bass reconstructors, or bass enhancers, improve low frequency reproduction in a car audio system with at least one subwoofer. These bass expander products will help your subs produce accurate bass thumps.