Upgrade your audio system with this professional-grade bundle that combines the power of the Kicker CXA4001 400W CX Series Mono Class D Subwoofer Amplifier with the complete wiring solution of the SoundBox 4 Gauge Amp Kit. The Kicker CXA4001 delivers deep, controlled bass using an optimized Class‑D design, featuring a variable 12dB crossover, KickEQ 6dB variable bass boost, and a 24dB subsonic filter for precise tuning. Its one‑ohm stable operation and flexible 9‑40V input make it ideal for a variety of installation configurations, with both vertical and horizontal mounting options to suit your style. The bundle is completed by the SoundBox 4 Gauge Amp Kit, which provides everything needed for a clean and professional installation. This kit includes 20 ft. of 4 Gauge SuperFlex power wire, 3 ft. of 4 Gauge ground wire, 18 ft. of 14 Gauge speaker wire, 18 ft. of 18 Gauge remote turn‑on wire, 18 ft. of triple shielded RCA interconnect cable, a 4 Gauge black wire loom, and a heat‑tested, water‑resistant inline ANL fuse holder with a 150 Amp fuse, plus all the necessary connecting terminals and wire ties. Together, these components offer a complete, reliable, and efficient solution for boosting your system's bass performance while ensuring a neat and secure installation. Enjoy enhanced sound quality, maximum flexibility, and professional results with this all‑in‑one amplifier and wiring bundle.