With proper care and installation the CEQ600 will service you with years of performance and reliability. The CEQ600 is intended for those who value the acoustic benefits of a multiband Parametric Equalizer / Subwoofer Crossover coupled with the power of controlling four amplifier channels and two independent sub woofer channels directly from the automobile dash board. The CEQ600 is a passive preamp equalizer requiring external amplification to power speakers. It provides 2 channels of front ou