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
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

$199.99

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

$69.00

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

$82.99

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

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

$139.99

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

FREE NVX Bass Expanding Processor with Purchase!

$59.99

IN STOCK

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!

$349.99

IN STOCK

Only 1 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

FREE $10 Sonic Electronix Gift Card

$79.99

IN STOCK

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

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

50% Off RCA Interconnect Cables with Purchase!

$103.99

IN STOCK

Only 3 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

$124.99

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 Shipping,
10% Rewards, Extended Warranty and more!

$59.99

IN STOCK

2-way / 3-way Active Crossover with Remote Bass Control

• 2-Way/3-Way Electronic Crossover
• Bass boost (0-12dB @ 45Hz)
• Quasi-Parametric EQ
• 180-Degree Phase-Shift Switch
• Front/Rear Channel Frequency
• Front and Rear Adjustments
• RCA Pre-Amp Output

$49.99

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

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 NVX RCA Interconnect Cables with Purchase!

$54.99

IN STOCK

Digital Bass Enhancement Processor

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

$49.99

IN STOCK

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

$53.99

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

$69.00

IN STOCK

Auto-EQ Microphone for 2010 Audio/Video Receivers

• Pioneer Auto Equalization Microphone
• Designed for 2010 Audio/Video Receivers
• Enables the Automatic Adjustment of the EQ Settings
• Attached 6.5' Cable
• Male 3.5mm Connector

$34.97

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

$24.99

IN STOCK

Only 1 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.