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Earthquake Sound EQ-4000BT v2 4-Band 1/2 DIN Pre-Amp Car Audio Graphic Equalizer with RCA, AUX, Mini Jack, and Bluetooth Streaming Ready

Free shipping on orders over $29.99

$87.95

$ 34 .99 $34.99

In Stock

About this item

  • Great application for cars, classic cars, motorcycles, RV, ATV, and boats; 6 channel 4-band mobile audio 1/2 DIN pre-amp graphic equalizer with Bluetooth wireless streaming capability
  • Features 4 input sources - selectable rear RCA main, auxiliary with variable gain control, front panel 3.5mm auxiliary, and Bluetooth
  • 4 fully adjustable -12dB to +12dB bands of equalization (150Hz, 550Hz, 2.5kHz, 15kHz) with fader control
  • Independent adjustable master volume, subwoofer level control, and subwoofer frequency control from 35–120Hz @ -3dB, 18dB/Oct
  • Front panel blue illumination LED lighting with fully retractable controls; Includes installation mounting hardware, 1A twist style fuse with holder, and 3 pin plug-in PCB screw terminal block connector


Take complete control of your mobile audio system with the Earthquake Sound EQ-4000BT v2. This 1/2 DIN 4-Band parametric equalizer can be installed up front for quick on the fly adjustments for real time tuning that is critical for any audio system. With audio streaming being more popular than ever, users can stream their favorite tunes and playlists directly from smartphones or other Bluetooth-enabled devices. Four input source options are available giving users maximum flexibility for a better listening experience. Subwoofer level and crossover frequency controls are also at the front panel making it easier for users to tailor low frequencies to their listening preferences. Whether used for personal or commercial audio systems, the new EQ-4000BT v2 will give you the ability to get the most out of your audio system and control the sound to suit your musical taste.


Seed of Abraham
Reviewed in the United States on May 31, 2024
I purchased two of these units. The first one was in a car that sold shortly after I installed it. Was running a Sony deck two Rockford fosgate amps, 6.5, 6x9 and 2 10’s sounded great think that is part of why the car sold so quick. The second unit I purchased was good until I started the engine and got all kinds of engine noise through the system. I took it out and ran everything off the deck no more engine noise but not as loud . Going to contact Earthquake to see what they suggest. The Bluetooth feature on the unit works great.
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