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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.
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

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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



Compact Disc for Calibration & Setup of CL441DSP and CL-SSI

• Calibration CD for JL Audio CleanSweep
• Contains Tracks for General System Tuning
• Channel & Phase Identification
• Pink Noise
• Sine Waves



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



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 Bass Reconstruction Processor w/ Level Control!



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!



4-Band Graphic Equalizer with Built-In Pre-Amp and Subwoofer Control and CD/Aux Selector Switch

• 4-Band Graphic Equalizer with Built-In Pre-Amp and Subwoofer Control and CD/Aux Selector Switch
• 4 Gain controls (± 18dB)
• Isolated PWM (Pulse Width Modulated) power supply
• Selectable Radio/CD/Auxiliary outputs
• Master volume gain control



Line Driver with Signal Booster

• 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



5-Band Parametric Equalizer EQ w/ Kicker Remote Level Bass Control Input

• 5-Band Parametric EQ
• 12 dB Cut/Boost
• Front/Rear Fader
• 2 Pair RCA Inputs
• Line 1/Line 2 Selector
• Remote Bass Level Control
• 7V Output
• Adjustable Input Gain (950mV-9.6V)

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Only 2 Left!

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



Digital Bass Reconstruction Processor with Parametric Bass Control Remote

• SMT Technology with Ultra Bass Response
• Aluminum Die-Cast Chassis
• Variable Frequency Sweep
• Variable Q Width
• Variable PWM Subsonic Filter
• Low Level RCA Input
• Signal Sense Remote Turn-on



1/2 DIN 7-Band Parametric Equalizer w/ LED Display

• 7-Band Parametric Equalizer
• Cut/Boost: +/-12dB
• Independent Subwoofer Level Control
• Variable 30-300Hz Subwoofer Low-Pass Filter



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



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



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



6 Channel Line Out Converter with Internal Summing & 5-year warranty*!

• Six Speaker Level Inputs – Can Accept 400 Watt Signals!
• GTO™ Signal-Sensing Input
• Internal Channel Summing
• Line Output Converter



7-Band Equalizer w/ Subwoofer Output & Master Volume Control

• 7-Band Preamp Equalizer
• Subwoofer Output
• Blue Night Illumination
• RCA Input and Output Connectors
• Subwoofer Level Control
• Adjustable Input Gain Controls



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



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



Digital Bass Enhancement Processor

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



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.