Boss Audio AVA1210 7-Band Pre-Amplifier Car Stereo Equalizer

Boss Audio AVA-1210 7-Band Parametric Equalizer Car Audio EQ Signal Processor

Clarion EQS746 7-Band Graphic Equalizer Car Audio Signal Processor

Recoil REQ7 Car Audio Equalizer 7 Band 1/2 DIN Pre-Amp Sound Processor

Optimus 7-Band Rotary Control 4CH Equalizer With Subwoofer Crossover Model 12-19

EQS755 7-Band Car Audio Graphic Equalizer with Front 3.5Mm Auxiliary Input, Rear

BLAUPUNKT EP1700X CAR AUDIO DIGITAL BASS RECONSTRUCTION PROCESSOR w/ REMOTE

9 Band Car Audio Equalizer, Car Graphic Equalizer EQ W/Front Rear +Sub Output 8V