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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

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
Digital Sound Processors
In-Dash Sound Processors

Top 20 in Sound Processors

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

Make Sure You Have Everything You Need!

$62.99

IN STOCK

3-way Electronic Crossover

• 3-way Electronic Crossover
• 2/4/6 Channel Input
• 6-Channel / 5 Volt RCA Outputs (Front/Rear/Subwoofer)
• Front/Rear/Subwoofer Lever Control
• Subwoofer Equalizer and Boost Level Controls
• Gold Plated Terminals

$85.97

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

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10% Rewards, Extended Warranty and more!

$99.99

AVAILABLE

Ships at Later Date

4-Band Equalizer with 9-Volt Line-Driver and Multiple-Source Signal Processor

• Half-DIN, 4-Band preamp EQ with front/rear active crossover features
• Line Driver circuit delivers 9-volts of preamp level signal through the RCA's
• Audio input selector
• Input level controls

$59.99

IN STOCK

Digital Bass Restoration Sound Processor

• Digital Bass Restoration/Booster Processor
• Low Frequency Adjustment
• Flat Frequency Response
• Removable Terminal Block
• 8 Volt Maximum Output Voltage

50% Off RCA Interconnect Cables with Purchase!

$89.99

IN STOCK

7-Band 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

Make Sure You Have Everything You Need!

$68.97

IN STOCK

9-Band Graphic Equalizer

• 9-Band Graphic Equalizer
• Crossover Slope: 12dB
• Cut/Boost: +/-10dB
• Signal-to-Noise Ratio: 94dB

$48.99

IN STOCK

7-Band Graphic Stereo Equalizer (1/2 DIN) with Dual Aux Input and Sub Control

• Dual Auxiliary Inputs
• Master & Subwoofer Volume Control
• Gold-Plated Contacts
• Blue Illumination
• 7V Preamp Outputs

$49.99

IN STOCK

7-Band Graphic Equalizer X-Bass Low Frequency Boost Selector

• 7-Band Graphic Preamp Equalizer
• Two Separate Front and Rear Channel RCA Outputs
• Gold-Plated RCA Input Connectors
• 5-Step LED Power Meter
• 0-12dB Boost/Cut
• Night Illumination

$19.99

IN STOCK

1/2 DIN 7-Band Graphic Equalizer with Subwoofer Electronic Crossover

• 1/2 DIN 7-Band Graphic Equalizer
• Up to 8 volts of Output
• Master Volume Control
• Low Noise Op-Amp Design
• Gold Plated RCA Connectors
• Subwoofer Electronic Crossover

$39.95

IN STOCK

Digital Bass Enhancement Processor

• Digital Bass Enhancement Processor
• Bass Driver Circuit
• Bass Equalization Circuit
• Bass Maximizer Indicator
• Bass Output Control

50% Off RCA Interconnect Cables with Purchase!

$60.97

IN STOCK

Only 2 Left!

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

50% Off RCA Interconnect Cables with Purchase!

$139.99

IN STOCK

Digital Bass Driver/Restoration Processor with Parametric Bass Control

• Digital Bass Driver/Restoration Processor with Parametric Bass Control
• Bass Driver For Accurate Recreation And More Bass Impact For Best Quality Bass
• Bass Equalization Circuit Contours Restored Bass To Speaker System
• Included Dash Mountable Wired Remote Control
• Bass Maximization Indicator Located On Chassis Provides Visual Leds That Flash When Bass Circuit Is Activated

50% Off RCA Interconnect Cables with Purchase!

$62.97

IN STOCK

Adjustable Line Driver with Signal Booster and a 96 db S/N Ratio

• PAC LD-10 Line Driver with Signal Booster
• Boost Your Signal and Gain the Most Power Out of Your System
• 10X RCA Signal Booster
• Solid State Ground Loop Isolation
• Left and Right Gain Level Adjustment

$23.95

IN STOCK

3-way Electronic Crossover

• 3-Way Crossover With Front, Rear and Subwoofer Inputs
• 0-18dB Bass Boost
• Front, Rear and Sub Outputs
• Chrome Inputs and Outputs

$34.99

IN STOCK

Only 3 Left!

4-Band 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

$26.99

IN STOCK

Only 3 Left!

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

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10% Rewards, Extended Warranty and more!

$189.99

IN STOCK

Only 2 Left!

Digital Bass Reconstruction Processor with Remote (HB2)

• Digital Bass Reconstruction Processor with Remote
• Remote Dash Mount Control
• Parametric Bass Control
• PFM Subsonic Filter

50% Off RCA Interconnect Cables with Purchase!

$39.99

IN STOCK

Only 3 Left!

7-Band Graphic Equalizer w/ Subwoofer Output

• 7-Band Graphic Equalizer
• Signal-to-Noise Ratio: 130dB
• Frequency Response: 20-20,000 Hz
• Signal-to-Noise Ratio: 130dB

$41.99

IN STOCK

Only 3 Left!

2-Channel Balanced Line Driver

• 2-Channel Balanced Line Driver
• Differential Inputs Eliminate Noise Picked Up By Signal Cables
• Low Output Impedance Drives A Noise Free Signal To An Amplifier(s)
• Speaker Level To RCA Line Level Converter

$119.99

IN STOCK

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.