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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 Auxiliary Input

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



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



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



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



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 Sound Processor w/ Amp!



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



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



9-Band Graphic Equalizer

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



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



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

• 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)



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



Bass Generator with Remote Subwoofer Control

• Maximum Output Voltage: 10 V
• Frequency Response: 10 Hz to 20,000 kHz, ±1 dB
• Remote Subwoofer Control included
• Dimensions: 9.00" W x 2.50" D x 6.25" H



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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



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



4-Band + Sub-Parametric Equalizer with Bluetooth Built-in

• 12 dB/Oct. 4-Band Graphic Equalizer with Sub Parametric Equalizer Control
• Bluetooth capability built-in
• 3 Sets of 9V preamp outputs (front, rear and subwoofer)
• Fully retractable controls



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7-Band Pre-Amp Equalizer w/ Digital Display

• 7-Band Pre-Amp Equalizer w/ Digital Display
• Max Output Voltage: 7V RMS
• Equalization Range: +- 12dB
• Input Impedance: 15,000 Ohms
• S/N Ratio: 90dB
• THD: .05%
• Frequency Response: 10Hz-50KHz



Digital Bass Enhancement Processor with Dash Mount Remote Control

• Digital Bass Enhancement Processor
• PFM Subsonic Filter
• Bass Level Control
• Blue Illuminated Controls
• Parametric Bass Equalization
• Balanced Inputs
• Bass Output Control



Parametric EQ w/ Crossover and Sub Volume

• 4-Band Parametric EQ w/Crossover and Sub Volume
• 2 Pair Line Inputs
• 3 Pair Line Outputs
• Adjustable Band Frequency
• 10V RMS Output
• Adjustable Input Sensitivity
• Low Noise BI-FET Op-Amp



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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



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Digital Bass Reconstruction Processor with Lighted Display and Remote Control

• Bass Reconstruction Processor
• Selectable Grounding Mode
• LED Indicators
• Dash Mount Remote Control
• Variable Boost Q
• Variable Boost Frequency
• Subsonic Filter: 35Hz, 50Hz, 80Hz



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.