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Equalizers & 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 system will sound like it has been professionally tuned and optimized. Tune your system to perfection with these digital sound processor DSPs, equalizers, crossovers, and get more bass with a bass reconstruction processor like the Epicenter. Getting a high quality LOC is also a must for those looking to integrate and add bass while retaining their factory stereo. Learn more about digital sound processors and to find out which type would be best for your car audio system.


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Boss AVA1210

7-Band Pre-Amp Half-DIN EQ with Subwoofer Output & Master Volume Control

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7-Band Pre-Amp Half-DIN EQ with 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

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Was $69.99 Details
$47.99

In stock

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

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Price: $47.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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Essential add-ons
NVX XIV205 V-Series RCA Audio Interconnect Cable

V-Series: 0.5m (1.64 ft) 2-Channel RCA Audio Interconnect Cable

$10.99

$7.99

Add to cart
NVX XIX205 X-Series RCA Audio Interconnect Cable

X-Series: 0.5m (1.64 ft) 2-Channel RCA Audio Interconnect Cable

$19.99

$13.99

Add to cart
NVX XIV23 V-Series: 2-Channel RCA Audio Interconnect Cable

V-Series: 3m (9.84 ft) 2-Channel RCA Audio Interconnect Cable

$14.99

$10.99

Add to cart
NVX XIX23 X-Series 2-Channel RCA Audio Interconnect Cable

X-Series: 3m (9.84 ft) 2-Channel RCA Audio Interconnect Cable

$24.99

$16.99

Add to cart
NVX XIV43 V-Series 4-Channel RCA Audio Interconnect Cable

V-Series: 3m (9.84 ft) 4-Channel RCA Audio Interconnect Cable

$24.99

$12.99

Add to cart
NVX XIV65 V-Series 6-Channel RCA Audio Interconnect Cable

V-Series: 5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable

$49.99

$29.99

Add to cart
NVX XWS1625 25 ft. of 16 Gauge Speaker Cable/Wire

25 ft. of True Spec 16 Gauge EnvyFlex Speaker Cable/Wire (100% Oxygen-Free Copper)

$29.99

$19.99

Add to cart

Axxess AXDSPL-GM32

Allows you to add a DSP to the factory system for select GM 2022-2024

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Allows you to add a DSP to the factory system for select GM 2022-2024

• Plug and Play T-harness for faster installation
• 15-band graphic EQ or 5-band Parametric EQ
• Can be used with OE and aftermarket radios
• Settings adjusted wirelessly from smart device
• Selectable high pass, low pass, or bandpass filters

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$381.99

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• Plug and Play T-harness for faster installation
• 15-band graphic EQ or 5-band Parametric EQ
• Can be used with OE and aftermarket radios
• Settings adjusted wirelessly from smart device
• Selectable high pass, low pass, or bandpass filters

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Price: $381.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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Axxess AXLOC-NIS1

2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier for Nissan 2007-Up

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2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier for Nissan 2007-Up

• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

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• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

AXLOC-NIS1 small

Item added to your cart.

Price: $49.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

JL Audio TwK-88

8-Channel Digital Sound Processor with 10-Band EQ Time Delay

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8-Channel Digital Sound Processor with 10-Band EQ Time Delay

• 8 Channel System Tuning Digital Sound Processor
• 10 Band Graphic and Parametric Equalizer
• Variable high pass and low pass filters
• Ability to configure delay and offset in time or distance units
• DRC-200 wired remote control included

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$549.99

In stock

• 8 Channel System Tuning Digital Sound Processor
• 10 Band Graphic and Parametric Equalizer
• Variable high pass and low pass filters
• Ability to configure delay and offset in time or distance units
• DRC-200 wired remote control included

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Price: $549.99

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7
Essential add-ons
Belva BBIC65

5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable (CCA)

$29.99

$9.99

Add to cart
NVX XIV65

V-Series: 5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable

$49.99

$29.99

Add to cart
Stinger SI4612

12 ft. of 6-Channel 4000 Series RCA Interconnect Cables

$73.00

$28.99

Add to cart
NVX XIV25

V-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable

$18.99

$12.99

Add to cart
NVX XIX25

X-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable

$29.99

$18.99

Add to cart
SMD DD-1

Distortion Detector/Analyzer

$207.99

$199.99

Add to cart

NVX XPLOC2

2-Channel 300W Adjustable Line Output Converter with Remote Turn On

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2-Channel 300W Adjustable Line Output Converter with Remote Turn On

• 2-Channel Premium Adjustable Line Output Converter
• 3:1 Step Down With Adjustable Output
• 300w Total Maximum Input (150w Per Channel)
• Super Low Distortion

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In stock

• 2-Channel Premium Adjustable Line Output Converter
• 3:1 Step Down With Adjustable Output
• 300w Total Maximum Input (150w Per Channel)
• Super Low Distortion

Axxess AXLOC-HN2

2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in select 2009-2023 vehicles from Honda, Acura

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2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in select 2009-2023 vehicles from Honda, Acura

• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

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• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

AXLOC-HN2 small

Item added to your cart.

Price: $49.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

JL Audio LoC-22

2-Channel Line Output Converter with Auto Turn-On

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2-Channel Line Output Converter with Auto Turn-On

• Fully Active, Speaker Level to Line Output Converter with Auto Turn On
•Fully-Regulated Switching MOSFET Power Supply
• Differential-balanced Input Architecture
• 40V RMS Per Channel
•DC-Offset Sensing or Signal Sensing Automatic Turn-On
• Ultra Compact Chassis Design
•Onboard LED Clipping Indicator

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$99.99

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• Fully Active, Speaker Level to Line Output Converter with Auto Turn On
•Fully-Regulated Switching MOSFET Power Supply
• Differential-balanced Input Architecture
• 40V RMS Per Channel
•DC-Offset Sensing or Signal Sensing Automatic Turn-On
• Ultra Compact Chassis Design
•Onboard LED Clipping Indicator

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Price: $99.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

PAC LP7-2

2-Channel LocPRO Series Line Output Converter with Remote Turn-On

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2-Channel LocPRO Series Line Output Converter with Remote Turn-On

• 2-Channel LOC PRO Series
• Remote Turn on Wire
• Single Dial
• Signal-Sensing Circuit
• Surface Mount Construction
• Level Gain Adjustment

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• 2-Channel LOC PRO Series
• Remote Turn on Wire
• Single Dial
• Signal-Sensing Circuit
• Surface Mount Construction
• Level Gain Adjustment

NVX XDSP28

8-Channel X-Series 15 Band Parametric EQ Digital Signal Processor (DSP) with LCD Display, Built-in Bluetooth and Remote Level Controller

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8-Channel X-Series 15 Band Parametric EQ Digital Signal Processor (DSP) with LCD Display, Built-in Bluetooth and Remote Level Controller

• 15 Band Parametric EQ
• 8-Channel RCA Outputs
• Provides up to 2 Volts of output
• Fully adjustable High and Low-pass filters
• Time alignment in 0.02 ms increments

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$129.99

In stock

• 15 Band Parametric EQ
• 8-Channel RCA Outputs
• Provides up to 2 Volts of output
• Fully adjustable High and Low-pass filters
• Time alignment in 0.02 ms increments

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Item added to your cart.

Price: $129.99

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7
Essential add-ons
Belva BBIC65

5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable (CCA)

$29.99

$9.99

Add to cart
NVX XIV65

V-Series: 5m (16.40 ft) 6-Channel RCA Audio Interconnect Cable

$49.99

$29.99

Add to cart
Stinger SI4612

12 ft. of 6-Channel 4000 Series RCA Interconnect Cables

$73.00

$28.99

Add to cart
NVX XIV25

V-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable

$18.99

$12.99

Add to cart
NVX XIX25

X-Series: 5m (16.40 ft) 2-Channel RCA Audio Interconnect Cable

$29.99

$18.99

Add to cart
SMD DD-1

Distortion Detector/Analyzer

$207.99

$199.99

Add to cart

Axxess AXLOC-FD1

2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in Ford 2003-2019

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2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in Ford 2003-2019

• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

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Was $87.00 Details
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• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

AXLOC-FD1 small

Item added to your cart.

Price: $49.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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SMD AMM-1

Audio Multimeter

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Audio Multimeter

• Measure True Amplifier Power Output
• Measure DC Voltage Drops
• Measure Common DC Voltages
• Measure Impedance of Speakers
• Measure Phase Difference

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• Measure True Amplifier Power Output
• Measure DC Voltage Drops
• Measure Common DC Voltages
• Measure Impedance of Speakers
• Measure Phase Difference

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Price: $456.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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NVX XLCA2

2-Channel Line Out Converter xBOOST Technology with Remote Bass Knob

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2-Channel Line Out Converter xBOOST Technology with Remote Bass Knob

• 2-channel line out converter
• Speaker Level Input Accepts Up To 400 Watts RMS
• Bass Enhancer And Bass Compensation
• xBOOST Technology
• Selectable Auto On
• 9.5 Volt Pre-Out
• 12 Volt Trigger Out

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$49.99

In stock

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Price: $49.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

Axxess AXLOC-GMLN1

2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in select 2006-2023 vehicles from GMC, Chevrolet, Cadillac

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2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in select 2006-2023 vehicles from GMC, Chevrolet, Cadillac

• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

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• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

AXLOC-GMLN1 small

Item added to your cart.

Price: $49.99

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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Axxess AXLOC-TY1

2-Channel line Output Converter for select 1986-2020 vehicles from Toyota

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2-Channel line Output Converter for select 1986-2020 vehicles from Toyota

• 55 watts per channel
• Features a T-harness that installs quickly

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• 55 watts per channel
• Features a T-harness that installs quickly

AXLOC-TY1 small

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Price: $59.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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Axxess AXLOC-GM31

2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in select 2019-2024 vehicles from GMC, Chevrolet With RPO IOR

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2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in select 2019-2024 vehicles from GMC, Chevrolet With RPO IOR

• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

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• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

AXLOC-GM31 small

Item added to your cart.

Price: $49.99

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

Axxess AXLOC-CH3

2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in Chrysler 2011-2020

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2-Channel Line Output Converter with Plug and Play T-harness for adding an aftermarket amplifier in Chrysler 2011-2020

• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

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• Plug and Play Design (No cutting or splicing)
• Provides 12-volt 500-mA remote wire
• Includes gain level controller to adjust the overall output
• Designed to provide 2-channels of low-level audio

AXLOC-CH3 small

Item added to your cart.

Price: $49.99

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Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

Metra BC-DSPX-HD2

DSP and Interface in one HD FLH & FLT 2014-2021

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DSP and Interface in one HD FLH & FLT 2014-2021

• 31 Band graphic EQ, or 5 Band parametric EQ per channel
• THD <0.03%
• Operating voltage: 10-16V
• Micro-B USB updatable
• Water-resistant case & connections
• 4 selectable crossover slopes

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$389.99

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• 31 Band graphic EQ, or 5 Band parametric EQ per channel
• THD <0.03%
• Operating voltage: 10-16V
• Micro-B USB updatable
• Water-resistant case & connections
• 4 selectable crossover slopes

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Price: $389.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

Axxess AXLOC-VW2

2-Channel line Output Converter for select 2015-2022 vehicles from Volkswagen

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2-Channel line Output Converter for select 2015-2022 vehicles from Volkswagen

• Gain Controller is included
• 55 watts per channel
• Features a T-harness that installs quickly

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• Gain Controller is included
• 55 watts per channel
• Features a T-harness that installs quickly

AXLOC-VW2 small

Item added to your cart.

Price: $59.99

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7

Belva BAMMD1

Automotive 6-Function Digital Multimeter Tester

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Automotive 6-Function Digital Multimeter Tester

• Features easy-to-read 2" Digital display
• Updates 2.5 times per second
• Low battery indicator
• Over range indicator
• Includes two 24 in. 18 gauge CCA test leads

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• Features easy-to-read 2" Digital display
• Updates 2.5 times per second
• Low battery indicator
• Over range indicator
• Includes two 24 in. 18 gauge CCA test leads

Rockford Fosgate RFPEQU

2-Channel Universal Punch EQ with Remote & Line Driver

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2-Channel Universal Punch EQ with Remote & Line Driver

• 2-Channel Universal Punch EQ
• Built-In Line Driver
• Auto-Sense Turn-On
• Compact Design

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• 2-Channel Universal Punch EQ
• Built-In Line Driver
• Auto-Sense Turn-On
• Compact Design

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Price: $68.00

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  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
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FAQ Frequently asked questions in Equalizers & Sound Processors


An amplifier equalizer, commonly known as an EQ, is a device that allows you to adjust the audio frequencies in your car audio system. It enhances the overall sound quality by giving you precise control over the bass, midrange, and treble frequencies. By using an EQ, you can customize the sound to your preferences and compensate for any acoustic deficiencies in your car's interior. Whether you prefer deep bass, crisp highs, or a balanced sound, an amplifier equalizer lets you fine-tune the audio output to suit your taste. It optimizes your listening experience and can significantly improve the clarity, detail, and depth of your music.
Most amplifier equalizers are designed to be compatible with a wide range of car audio systems. They can be used with factory head units, aftermarket stereos, and various amplifier configurations. Some EQs have preamp outputs, which make them compatible with amplifiers, while others can be directly connected to your car's speaker wires. However, it's essential to check the specifications and compatibility of the EQ with your specific car audio system. Some high-end equalizers may require additional connections or components, such as line drivers or crossover networks, to function optimally. To ensure a seamless integration and the best performance, consult the user manual or reach out to Sonic Electronix's customer support for expert advice.
Digital sound processors (DSPs) are advanced audio devices that offer more sophisticated signal processing capabilities compared to traditional equalizers. While both EQs and DSPs allow you to adjust the audio frequencies, DSPs provide additional features like time alignment, crossover settings, and parametric equalization. Time alignment enables you to delay certain speakers to ensure the sound reaches your ears simultaneously, enhancing the soundstage and imaging. Crossover settings allow you to set different frequency ranges for various speakers, preventing audio overlap and distortion. Parametric equalization in DSPs provides greater control over specific frequency bands, allowing you to make more precise adjustments. If you desire a more comprehensive audio tuning experience with enhanced control over your car audio system, a digital sound processor may be the ideal choice.
The installation process for amplifier equalizers and sound processors can vary based on the specific model and your car's audio system. Most EQs and DSPs come with detailed installation instructions that guide you through the process. Generally, you'll need to connect the equalizer or processor to your car stereo or amplifier using RCA cables or speaker wire connections. Some advanced DSPs may require additional connections to your car's battery and other components. If you are unsure or uncomfortable with the installation process, it's best to seek professional assistance from a car audio specialist or technician. Improper installation can lead to performance issues or damage to your car audio components. Sonic Electronix's trained staff can also provide guidance on the installation process and help you choose an EQ or DSP that suits your specific setup.
While an amplifier equalizer can help fine-tune your car audio system's sound, it is not specifically designed to eliminate noise or distortion caused by faulty components or electrical issues. Noise and distortion may result from various factors such as poor grounding, interference, or damaged speakers. If you're experiencing audio problems in your car audio system, it's crucial to identify the root cause. Start by checking all connections, ensuring they are secure and free of corrosion. If you suspect electrical interference, consider adding noise filters or isolators. Damaged speakers or amplifiers may require professional diagnostics and repairs. An amplifier equalizer can be a valuable tool to optimize your sound quality, but it's essential to address any underlying issues to achieve the best audio performance. If you're unsure about the cause of the noise or distortion, consult Sonic Electronix's customer support for troubleshooting advice and recommendations.

All About

Equalizers & Sound Processors
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 equalizer preset curves do not adjust, resulting in under performance from your aftermarket speakers. Processors reshape the output of your factory stereo 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.

If you're searching for top-notch Amp Equalizers & Sound Processors that will take your car audio experience to the next level, you've come to the right place. Our extensive collection features only the most reputable brands and models, ensuring that you can find the perfect Amp Equalizer or Sound Processor to enhance the audio performance in your vehicle.

Amp Equalizers & Sound Processors play a crucial role in optimizing your car audio system and delivering an exceptional listening experience. An Amp Equalizer allows you to fine-tune the frequency response of your audio, giving you precise control over bass, midrange, and treble levels. By adjusting these frequencies, you can tailor the sound to your preferences and achieve a well-balanced and immersive listening experience.

On the other hand, Sound Processors are designed to enhance and clean up your audio signal. They can correct audio imperfections and distortions that may occur during the recording or transmission process, resulting in crystal-clear and detailed sound reproduction. Sound Processors can also be used to eliminate background noise, reduce static, and enhance the overall clarity of your audio.

Aside from their sound-enhancing capabilities, Amp Equalizers & Sound Processors can also help optimize the performance of your car's audio system. They ensure that the power from your amplifier is distributed efficiently to your speakers, minimizing the risk of distortion and damage to your speakers. With Amp Equalizers & Sound Processors, you can achieve optimal audio quality and safeguard the longevity of your audio components.

At Sonic Electronix, we are dedicated to helping you find the best Amp Equalizers & Sound Processors for your specific car audio needs. Our team of audio experts is available to provide personalized assistance throughout your shopping journey. If you have any questions or need guidance in selecting the perfect Amp Equalizer or Sound Processor, don't hesitate to contact us at 1-502-200-8010. Our knowledgeable staff is eager to provide the information you need and assist you in making an informed decision that will elevate your car audio experience.

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