This bundle includes 1x Kicker 46CXA4001 CXA4001 400-Watt Mono Class D Subwoofer Amp and 1x Kicker 48TRTP102 10" Down Firing Sub & Passive Radiator, 2-Ohm. Efficient Class-D amplifier with a 400-watt output for powerful bass performance. Features KickEQ for a 6dB variable bass boost and a 24dB subsonic filter for protection. Compact design with vertical mounting option and FIT+ for easy integration with various systems. Kicker 48TRTP102 Subwoofer features Forced-Air Cooling technology for improved endurance and high-output ReFLEX Passive Woofer for enhanced bass output. This bundle features the Kicker 46CXA4001 CXA4001 400-Watt Mono Class D Subwoofer Amp, offering efficient Class-D amplification, a variable bass boost of up to 6dB, and Fail-safe Integration Technology-PLUS for seamless compatibility with most radios. With dimensions of 8-1/8 x 20.6 inches, this amp delivers 400 watts into one channel at 1 Ohm, with a frequency response of 25-200Hz and various control features for optimal sound customization. The Kicker 48TRTP102 10" Down Firing Sub & Passive Radiator, 2-Ohm, included in this bundle, boasts a thin-mount design with Forced-Air Cooling for 20% increased reliability, producing powerful bass output in an internally braced enclosure. This subwoofer enclosure, measuring 5-5/8H x 13-1/4W x 25-5/8L inches, supports 400 watts RMS power and offers a frequency response of 25-500Hz. Install it under a truck seat or cargo area for exceptional bass performance without space concerns. Get ready to experience hard-hitting KICKER bass in a compact, reliable package with this impressive amp and subwoofer bundle.