BOSS AUDIO AVA1204 7 Band Pre-Amp Equalizer with Remote Subwoofer Level Control Half-DIN 7 Band Pre-Amp EQ Equalization Range +/- 12dB EQ bands 60Hz, 150Hz, 400Hz, 1khz, 3kHz, 6kHz, 15kHz Front Input Front, Rear & Sub Outputs Subwoofer Level Control and X-BASS Bass enhancer Variable Low Pass Crossover 7 Bands Input, RCA / SPKR; Subwoofer output, Yes Preamp/amplified, preamp LED power meter & Night illumination Subwoofer Level Control