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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.

EQs & 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
Other Sound Processors
Digital Sound Processors
In-Dash Sound Processors
Line Out Converters

Top Sellers in EQs & 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

$168.93

IN STOCK

80W 2-Channel Line Output Converter with Digital Noise Filter + Line Driver

• 6:1 Step Down With Adjustable Output
• DC Amplifier Turn On Trigger
• 80w Maximum Input total (40w per channel)

$16.99

IN STOCK

300W (150W Per Channel) Premium, Super Low Distortion 2-Channel Adjustable Line Output Converter

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

$19.99

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

$129.99

IN STOCK

600W (150W Per Channel) Premium, Super Low Distortion 4-Channel Adjustable Line Output Converter - for Adding Amplifier(s)

• 4-Channel Premium Adjustable Line Output Converter
• 6:1 Step Down With Adjustable Output
• 600w Total Maximum Input (150w Per Channel)
• Super Low Distortion

$34.99

IN STOCK

  • 4.4
7 reviews

100W Max (50 W Per Channel) Mini 2-Channel Line Output Converter

• Line out converter for adding amplifier to factory radio
• Auto remote turn on
• 6:1 step down with adjustable output
• 100 Watts Max
• 50 Watts max per channel

$6.99

IN STOCK

160W, 4-Channel Line Output Converter with Digital Noise Filter + Line Driver

• 3:1 Step Down With Adjustable Output
• DC Amplifier Turn On Trigger
• 160w Maximum Input Total (40w Per Channel)

$17.99

IN STOCK

7-Band Graphic Equalizer with Front 3.5mm Auxiliary Input, Rear RCA Auxiliary Input and High Level Speaker Inputs

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

$59.99

IN STOCK

2-Channel Fixed Line Level Converter

• 2-Channel Fixed Line Level Converter
• Designed for Adding Aftermarket Amplifiers to a Factory OEM System
• Standard EIA Color Coded Wires
• 30 Watts Maximum Input
• Gold-Plated RCA Connectors

$5.99

IN STOCK

Variable LOC (Line Out Converter)

• Adjustable Line Output Converter
• Utilize Audio Transformer for Noise Isolation
• Compatible with 2 - 40 watts RMS of Radio Output

$7.99

IN STOCK

  • 3.9
9 reviews

L.O.C. PRO Series 2-Channel 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

$18.99

IN STOCK

  • 5.0
3 reviews

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!

$299.99

IN STOCK

Line Out Converter for Adding an Amplifier to a Factory Radio

• Converts 10 to 30 watts per channel with a fixed 10:1 conversion
• Great for getting an additional set of pre-amps outputs from a head unit equipped with only one set

$8.92

IN STOCK

Concert Series Digital Bass Reconstruction Processor (Bass Booster Expander) with Remote & 5-year warranty*!

• Black Digital Bass Reconstruction Processor
• Patented Bass Maximizer™
• 9.5Vrms Pre-amp Max Output!
• Perfect addition to all systems

$129.99

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

Add the Remote Subwoofer Control and Save 20%

$99.99

IN STOCK

  • 5.0
3 reviews

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!

$119.99

IN STOCK

Only 3 Left!

Four Channel Adjustable Line Output Converter for Adding an Amplifier to a Factory Radio

• 4-Channel Speaker Level Converter
• Accepts 80 watts per channel
• Can be used as a line-out converter
• Can interface with JBL/Premium Sound/BOSE audio systems
• Common ground adaptor

$14.99

IN STOCK

  • 4.8
4 reviews

2-Channel Speaker Level to RCA Output Converter (High-to-Low Converter)

• 2-Channel High-to-Low Level Converter
• High-to-Low Signal Converter to Connect 2-Channel Amplifiers to Radios Without RCA Output
• Output Voltage: Up to 3V (low-level)
• Mounting: Behind Dash

$14.99

IN STOCK

2-Channel K-Series Speaker Wire to RCA Line Out Converter (LOC)

• Speaker Cable to RCA Adapter
• 2-Channel K-Series
• Line Out Converter
• K Grip Connectors w/ Split Pin RCA
• Silver Tinned OFC Wire

VIP Guarantee - FREE 2-Day Shipping,
10% Rewards, Extended Warranty and more!

$24.95

IN STOCK

  • 4.5
2 reviews

L.O.C. PRO Series 4-Channel Line Output Converter with Remote Turn On

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

$25.99

IN STOCK

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EQs & 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.