American Bass ABV-7B 7-Band Parametric Car Equalizer Pre-Amp — Digital Display, 7V RMS Max Output

The American Bass ABV-7B is a 7-band parametric car audio equalizer that functions as a pre-amplifier to sculpt your system's sound. Each of the seven adjustable bands gives precise frequency control, and all adjustments are shown on a built-in digital display for easy, accurate tuning. Max output voltage is 7V RMS.