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  2. Discontinued Car Audio & Electronics
  3. Discontinued Car Amplifiers
  4. Discontinued Equalizers & Sound Processors
  5. Discontinued Car Equalizers (EQs)

Discontinued Car Equalizers (EQs)

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Type of Equalizer
This determines the way the equalizer processes the signal from the source unit. A parametric equalizer allows to you adjust the center point of the frequency band you are adjusting as well the bandwidth which can be narrowed or widened. A graphic equalizer has fixed frequency bands and bandwidth and only the frequency bands can be adjusted. A digital equalizer uses a software program to tune your system.
A graphic equalizer typically has more adjustable bands and is less expensive, whereas a parametric will have fewer bands but offer a greater level of control and provide more tuning options. Digital equalizers will tune your system with the most detail and precision but require a computer and are typically a little higher in price.
Equalizer Bands
The number of graphic or parametric equalizer bands the receiver has. The better the EQ, the more likely you will be able to "tweak" your sounds to your desire.
Line Driver
A line driver is a small amplifier used to support the strength of the audio signal coming from the source unit.
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Precision Power E.5V

5-Band Parametric Equalizer with LED Voltage Display

E.5V big DISCONTINUED
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Precision Power E.5V

5-Band Parametric Equalizer with LED Voltage Display

• 5 band-Band Parametric Equalizer
• 3 Sets of preamp outputs (front, rear, and subwoofer)
• 8.5 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs

• 5 band-Band Parametric Equalizer
• 3 Sets of preamp outputs (front, rear, and subwoofer)
• 8.5 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs

AudioControl DQL-8 R/B

Eight Channel Line Output Converter with Auxiliary Input and Digital Signal Processing

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AudioControl DQL-8 R/B

Eight Channel Line Output Converter with Auxiliary Input and Digital Signal Processing

8-channel Line Output Converter with Digital Signal Processing • 8 Input and 6 output channel • 8-user Adjustable memory • 24 dB/octave Linkwitz-Riley alignment crossover

8-channel Line Output Converter with Digital Signal Processing • 8 Input and 6 output channel • 8-user Adjustable memory • 24 dB/octave Linkwitz-Riley alignment crossover

DS18 EQX7PRO (Open Box, Good)

7-Band Graphic Equalizer with High Level Input, Auto Turn-on and LED Indicator

EQX7PRO big DISCONTINUED
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DS18 EQX7PRO (Open Box, Good)

7-Band Graphic Equalizer with High Level Input, Auto Turn-on and LED Indicator

• 7 band-Band Graphic Equalizer
• 3 Sets of preamp outputs (front, rear, and subwoofer)
• 8 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs

• 7 band-Band Graphic Equalizer
• 3 Sets of preamp outputs (front, rear, and subwoofer)
• 8 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs

AudioControl LCQ-1 (Gray) R/B

6-channel Equalizer with Line-output converter

LCQ-1-GRAY big DISCONTINUED
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AudioControl LCQ-1 (Gray) R/B

6-channel Equalizer with Line-output converter

6-Channel Line Output Converter • 6-Channel Preamp Level Outputs • 12-Volt turn-on lead output • Independent Front, Rear, and Sub EQ Controls

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6-Channel Line Output Converter • 6-Channel Preamp Level Outputs • 12-Volt turn-on lead output • Independent Front, Rear, and Sub EQ Controls

Precision Power PPI E.DZ

7-Band Dual Zone Graphic Equalizer with Auxiliary Input and Independent Subwoofer Control

E.DZ big DISCONTINUED
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Precision Power PPI E.DZ

7-Band Dual Zone Graphic Equalizer with Auxiliary Input and Independent Subwoofer Control

• PrecisionPower 7-Band Dual Zone Graphic Equalizer
• Auxiliary Input
• low-Pass Filter
• Red Backlit Control Knobs
• Fader Control
• Independent Subwoofer Level Control

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• PrecisionPower 7-Band Dual Zone Graphic Equalizer
• Auxiliary Input
• low-Pass Filter
• Red Backlit Control Knobs
• Fader Control
• Independent Subwoofer Level Control

AudioControl DQS (Open Box with 1-year Warranty)

6-Channel Digital Car Audio Equalizer

DQS-Silver big DISCONTINUED
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AudioControl DQS (Open Box with 1-year Warranty)

6-Channel Digital Car Audio Equalizer

6-channel Digital Equalizer • 30 Constant-Q equalization controls per channel • Input for optional Digital Dash Control • Ideal for car theater • Input and output level controls

6-channel Digital Equalizer • 30 Constant-Q equalization controls per channel • Input for optional Digital Dash Control • Ideal for car theater • Input and output level controls

Boss EQ1208 4-Band Preamp Car Audio Equalizer w/ Subwoofer Sub Output (10 Pack)

Boss EQ1208 4-Band Preamp Car Audio Equalizer w/ Subwoofer Sub Output (10 Pack)

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Boss EQ1208 4-Band Preamp Car Audio Equalizer w/ Subwoofer Sub Output (10 Pack)

Boss EQ1208 4-Band Preamp Car Audio Equalizer w/ Subwoofer Sub Output (10 Pack)

• 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

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• 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

Soundstream MPQ-6BX

5-Band Parametric Equalizer with Digital Bass Reconstruction Processor

MPQ-6BX big DISCONTINUED
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Soundstream MPQ-6BX

5-Band Parametric Equalizer with Digital Bass Reconstruction Processor

• 5 band-Band Parametric Equalizer with Digital Bass Processor
• 3 Sets of preamp outputs (front, rear and subwoofer)
• 12 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs

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• 5 band-Band Parametric Equalizer with Digital Bass Processor
• 3 Sets of preamp outputs (front, rear and subwoofer)
• 12 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs

AudioControl DQX (Yellow) R/B

(Factory Refurbished) Digital Stereo Equalizer/Crossover

DQX-Yellow big DISCONTINUED
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AudioControl DQX (Yellow) R/B

(Factory Refurbished) Digital Stereo Equalizer/Crossover

Digital Stereo Equalizer/Crossover • Digital car audio equalizer and crossover • Two inputs and six output channels • Thirty graphic equalization controls per channel • Two fully adjustable parametric equalization controls per channel

Digital Stereo Equalizer/Crossover • Digital car audio equalizer and crossover • Two inputs and six output channels • Thirty graphic equalization controls per channel • Two fully adjustable parametric equalization controls per channel

Massive Audio EQ7X

7-Band Graphic EQ Half DIN 8V Output Line Driver with RCA Auxiliary Input

EQ7X big DISCONTINUED
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Massive Audio EQ7X

7-Band Graphic EQ Half DIN 8V Output Line Driver with RCA Auxiliary Input

• 7-Band Graphic Equalizer
• 8V Line Driver Built-In
• Switchable Low Pass Crossover
• Gold-Plated RCA Inputs
• Subwoofer Level Control

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• 7-Band Graphic Equalizer
• 8V Line Driver Built-In
• Switchable Low Pass Crossover
• Gold-Plated RCA Inputs
• Subwoofer Level Control

Power Acoustik PWM-5V

5-Band Parametric Equalizer with LED Voltage Display

PWM-5V big DISCONTINUED
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Power Acoustik PWM-5V

5-Band Parametric Equalizer with LED Voltage Display

• 5 band-Band Parametric Equalizer
• 3 Sets of preamp outputs (front, rear, and subwoofer)
• 8.5 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs

• 5 band-Band Parametric Equalizer
• 3 Sets of preamp outputs (front, rear, and subwoofer)
• 8.5 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs

Power Acoustik PWM-20

4-Band Parametric Equalizer with Subwoofer Electronic Crossover

PWM-20 big DISCONTINUED
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Power Acoustik PWM-20

4-Band Parametric Equalizer with Subwoofer Electronic Crossover

4-Band Parametric Equalizer • Integrated Subwoofer Electronic Crossover • Isolated P.W.M Power Supply • 8V Maximum Output Voltage • Rotary Input/Output Control • Subwoofer Volume Control • Night Illumination

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4-Band Parametric Equalizer • Integrated Subwoofer Electronic Crossover • Isolated P.W.M Power Supply • 8V Maximum Output Voltage • Rotary Input/Output Control • Subwoofer Volume Control • Night Illumination

Autotek ATEQ

4-Band Equalizer with 9-Volt Line-Driver and Multiple-Source Signal Processor

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Autotek ATEQ

4-Band Equalizer with 9-Volt Line-Driver and Multiple-Source Signal Processor

• 1/2 DIN, 4-band, pre-amp EQ with front/rear active crossover
• Audio input selector for switching between the head unit and another source
• Input level controls for both car radio and any media device to ensure identical volume levels

• 1/2 DIN, 4-band, pre-amp EQ with front/rear active crossover
• Audio input selector for switching between the head unit and another source
• Input level controls for both car radio and any media device to ensure identical volume levels

AudioControl DQDX

6 Channel Performance DSP with 7-Band Equalizer, Crossover and Signal Delay

DQDX-BlackBlue big DISCONTINUED
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AudioControl DQDX

6 Channel Performance DSP with 7-Band Equalizer, Crossover and Signal Delay

• 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

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4

• 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

AudioControl DQS (Yellow)

6-Channel Digital Car Audio Equalizer

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AudioControl DQS (Yellow)

6-Channel Digital Car Audio Equalizer

6-channel Digital Equalizer • 30 Constant-Q equalization controls per channel • Input for optional Digital Dash Control • Ideal for car theater • Input and output level controls

1

6-channel Digital Equalizer • 30 Constant-Q equalization controls per channel • Input for optional Digital Dash Control • Ideal for car theater • Input and output level controls

AudioControl THREE.1

In-Dash Car Audio Equalizer and Crossover

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AudioControl THREE.1

In-Dash Car Audio Equalizer and Crossover

In-Dash Car Audio Equalizer and Crossover • balanced differential inputs • 13V line driver

3

In-Dash Car Audio Equalizer and Crossover • balanced differential inputs • 13V line driver

AudioControl DQS (Silver/Gray)

6-Channel Digital Car Audio Equalizer

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AudioControl DQS (Silver/Gray)

6-Channel Digital Car Audio Equalizer

6-channel Digital Equalizer • 30 Constant-Q equalization controls per channel • Input for optional Digital Dash Control • Ideal for car theater • Input and output level controls

3

6-channel Digital Equalizer • 30 Constant-Q equalization controls per channel • Input for optional Digital Dash Control • Ideal for car theater • Input and output level controls

Soundstream MPQ-5V

5-Band Parametric Equalizer with Voltage Display

MPQ-5V big DISCONTINUED
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Soundstream MPQ-5V

5-Band Parametric Equalizer with Voltage Display

• 5 band-Band Parametric Equalizer
• 3 Sets of preamp outputs (front, rear and subwoofer)
• 8.5 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs

• 5 band-Band Parametric Equalizer
• 3 Sets of preamp outputs (front, rear and subwoofer)
• 8.5 volts Max preamp outputs
• Subwoofer frequency and level control
• Gold-plated RCA level inputs

AudioControl DQXS

6-Channel Digital Crossover and Equalizer with Memory (Platinum Silver)

DQXS-SILVER big DISCONTINUED
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AudioControl DQXS

6-Channel Digital Crossover and Equalizer with Memory (Platinum Silver)

6-Channel Digital Crossover and Equalizer with Memory • 3-way Crossover • 8 Output channels • 1/3 Octave / 1/2 octave equalization per channel • 2 Parametric equalizers per channel • 142 Total equalization filters • Platinum Silver

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6-Channel Digital Crossover and Equalizer with Memory • 3-way Crossover • 8 Output channels • 1/3 Octave / 1/2 octave equalization per channel • 2 Parametric equalizers per channel • 142 Total equalization filters • Platinum Silver

Hifonics HF7BEQ

7-Band Parametric Band Equalizer with 9 Volt Line Driver

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Hifonics HF7BEQ

7-Band Parametric Band Equalizer with 9 Volt Line Driver

• 7 Band Parametric Equalizer with 9 volt Line Driver
• Type: Processor

  • ½ DIN ISO mount chassis 7-band EQ with 9-volt line driver
    • 7-band equalizer with -12dB to +12db variable
    • 3 stereo RCA outputs to drive front, rear and subwoofer audio amplifiers
    • Color: Black

    • • 7 Band Parametric Equalizer with 9 volt Line Driver
    • Type: Processor

  • ½ DIN ISO mount chassis 7-band EQ with 9-volt line driver
    • 7-band equalizer with -12dB to +12db variable
    • 3 stereo RCA outputs to drive front, rear and subwoofer audio amplifiers
    • Color: Black
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      FAQ Frequently asked questions in Discontinued Car Equalizers (EQs)

      Car Equalizers (EQs) Frequently Asked Questions (FAQ)
      A car equalizer, often referred to as an EQ, is an audio device designed to adjust and control the balance of frequencies in your car's audio system. It allows you to fine-tune the bass, midrange, and treble frequencies to achieve a desired sound profile. EQs are used to correct acoustic deficiencies in a vehicle's interior, tailor the audio output to personal preferences, and optimize the overall listening experience.
      A car equalizer works by adjusting the amplitude or level of specific frequency bands in the audio signal. It typically features sliders or knobs for different frequency ranges, such as bass, midrange, and treble. By manipulating these controls, you can boost or cut specific frequencies to enhance or diminish their presence in the audio output. This allows you to create a balanced soundstage and compensate for factors like speaker placement and vehicle acoustics.
      Yes, you can install a car equalizer in your existing car audio system. EQs can be integrated between the head unit and the amplifier or directly into the signal path, depending on the EQ model. Some modern car head units also come with built-in equalizer functions. When installing an external EQ, it's essential to ensure proper wiring and integration to achieve the desired audio adjustments. Professional installation may be recommended for complex setups.
      While some technical understanding of audio frequencies can be helpful, many car equalizers are designed with user-friendly interfaces, such as sliders or rotary knobs, that make adjustments intuitive. Basic knowledge of how different frequencies affect the audio can assist in achieving optimal results. Some advanced EQs also offer presets or automatic tuning features that can simplify the tuning process. However, for precision tuning and a customized sound, taking the time to experiment with different settings and listening to the changes is advisable.
      Yes, a car equalizer can significantly enhance audio quality in your car by allowing you to tailor the sound output to your preferences and the acoustics of your vehicle. It can address frequency imbalances, correct deficiencies caused by speaker placement, and compensate for road noise. With proper adjustments, an EQ can create a more immersive and enjoyable listening experience, making your favorite music sound clearer, more dynamic, and well-balanced.
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