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Massive Audio EQ4 1/2 DIN In-Dash 4-Band Graphic Equalizer OPEN BOX

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Original price $56.23
Original price $56.23 - Original price $56.23
Original price $56.23
Current price $28.39
$28.39 - $28.39
Current price $28.39

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  • Total Sound Control: Fine-tune your car audio like a pro with a 4-band graphic equalizer, allowing precise adjustment of bass, midrange, and treble frequencies for a customized listening experience.
  • Powerful Line Driver: Boost your signal up to 8 volts, ensuring your music remains clear and powerful even at high volumes, while minimizing interference and distortion.
  • Sleek Design: Its 1/2 DIN size fits seamlessly into your dashboard, blending style with functionality for a polished look that enhances your vehicle's interior.
  • Easy Integration: Compatible with most car audio systems, the EQ4 installs effortlessly, putting advanced audio control within reach without complicated setups.
  • Audiophile-grade Performance: Experience concert-quality sound on the road as the EQ4 elevates every note, delivering rich, dynamic audio that transforms your drive into an immersive sonic journey.

Massive Audio EQ4 1/2 DIN In-Dash 4-Band Graphic Equalizer OPEN BOX

**Please reference pictures

Original Box has some wear

In Working Condition

Small surface scratches and scuffs from previous installation, works as normal 

scratches are on the sides

Open-box items are NOT subject to returns. They are sold "AS IS". All requests for returns will not be accepted.**

This Listing Includes:

  • (1) EQ4 1/2 DIN in-dash 4-band Graphic Equalizer


Revolutionize your car audio setup with the Massive Audio EQ4 1/2 DIN In-Dash 4-Band Graphic Equalizer boasting an 8V Line Driver. Immerse yourself in a world of sonic precision as you sculpt your sound to perfection. From punchy basslines that thump through your chest to crisp highs that sparkle like diamonds, this powerhouse equalizer puts the reins of audio mastery right in your hands. Its sleek design seamlessly integrates into your dashboard, while its robust performance ensures that every note, beat, and lyric is delivered with unparalleled clarity and depth. Elevate your driving experience to concert-level proportions with the Massive Audio EQ4 – where every journey becomes a symphony of sound.


  • 1/2 DIN

  • 4 Band Graphic Equalizer

  • 50Hz, 315Hz, 2.5KHz, 12KHz

  • Each Frequency Adjustable From -12dB to +12dB

  • * -15dB to +15dB for Subwoofer Frequencies

  • Subwoofer Output Fixed at 120Hz

  • 8 Volt Output Line Driver

  • Auxiliary inputs 3.5mm for MP3, DVD or Phone

  • Three Stereo RCA Outputs (Front/Rear/Subwoofer)

  • Adjustable Master Volume Level Control

  • Adjustable Active Gain Preamp

  • 30V Bi-Polar Switching Power Supply

  • Frequency Response 10Hz - 50KHz / 100dB S/N

  • 20dB Headroom

  • Adjustable Subwoofer Level Control

  • Input Impedance 20K Ohms

  • Stereo Separation 82dB / 1KHz

  • Operating Voltage 11V - 15V Negative Ground

  • ISO Mounting Holes / Removable Trim Ring

  • 2-Channel RCA Input with Adjustable Gain

  • Dimensions: 7"(W) " 1"(H) " 4 1/8"(D)

Payment Information


We accept PayPal for all ebay orders. You can use your credit through PayPal as all major credit card are accepted by PayPal.

We accept PayPal for all international orders, your address must be verified with PayPal.

We are not responsible for any custom duties or brokerage fees that may apply for all international orders.

When you click on the Buy it Now button you are entering into a
contract whereby you agree to purchasing the item at the price listed.

If you want to ship your item to an alternate address please add
that address on your PayPal account and use the address as the default
or confirmed address to pay us through PayPal

With Free Same Business Day Shipping we work to get you your order Fast. 


All orders over $500 will require a signature for delivery.

All pre-selected shipping rates and methods are for customers with a
valid residential or commercial address within the Contiguous 48 United
States (PO Boxes address may require additional charges).

P.O. Boxes, APO/FPO addresses, Alaska, Hawaii, Puerto Rico, Guam,
U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada,
and other countries may require additional shipping fees. Please contact
a member of our team for detailed shipping charges.

Shipping is available only to PayPal verified addresses. When making
payment please confirm your address has been verified with PayPal. Once
payment is made shipping address can not be changed/altered. Payments
made using an unverified PayPal address will be refunded and order will
be canceled.

We will not accept request to change shipping address once payment
has been made. Please confirm your shipping address is up-to-date and

Typical handling time for orders is 1-business day. We do our best
to ship every package with-in 1 business day of receiving a cleared
payment. In some circumstances additional time may be need, in which
case we will contact buyer.

Shipped orders that are returned by the shipping company due to an
insufficient address or an undeliverable address will be refunded less a
20% restocking fee.

If package is refused or marked undeliverable and returned
back to us by the carrier, you will need to pay the shipping cost in
full to have the package sent back to you or we can refund the money
minus the cost of shipping


If you have not received your package, but the tracking information shows that it was delivered,
please do the following within 36 hours of expected, stated delivery:


Verify the shipping address on the order is the address where you are looking for the package

Look for a notice of attempted delivery

Look around the delivery location for the package, or see if a neighbor has accepted the delivery

Be sure to double check your mailbox and other usual spots for package delivery


If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.

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