Kenwood's "party pack" includes exactly what you need to impress your friends with bold, punchy bass a KAC-5204 2-channel amplifier and two KFC-W112S 12" subs. Just add some wiring and a sub enclosure to enjoy outstanding low-frequency performance.Each KFC-W112S 12" subwoofer sports an injection-molded polypropylene cone with a thick urethane surround, a combination that promotes deep excursion and accurate bass response. Each sub handles up to 200 watts RMS, and performs brilliantly in either a sealed or a ported box.Kenwood's reliable KAC-5204 2-channel amplifier powers the two subs comfortably with 150 watts in single-channel mode. A low-pass filter directs the correct frequencies to the subs, giving you plenty of bass without distortion. You'll hear and feel the low frequencies that your car's full-range speakers can't play.