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Soundstorm S4EQ 4 Band Pre Amp Graphic Car Audio Stereo Equalizer EQ With Knob$50.70
Dual Color Illumination Variable Subwoofer Filter, Subwoofer Level Control, Master Volume Control Switchable Phase Selector, Fader Control, Input Selector, 2 Source Input Gold-Plated Front, Rear, and Subwoofer Outputs, Pre-amp Output: 7 V EQ Band Center Frequencies: 40 Hz, 150 Hz, 1 kHz, 20 kHz Boost / Cut at Center Frequencies: + /