Infinity kappa k4 manual

I'm researching car amps for the first time in years and found the top of the line amp from Infinity only costs $300. I install my own gear. Everything is stock (yuck). I was considering a self-powered sub-woofer for the ease of use, but if I get this 5-channel Kappa K5 I might as well grab a component sub. Infinity. KAPPA four. The full-range Kappa amplifiers (Kappa two, Kappa four and Kappa five) include full-range line outputs. This allows the audio signal to be routed to additional amplifiers or self-powered subwoofer solutions, increasing your system configuration options.