This Acoustic Audio XS10A, 10" subwoofer and amplifier combo, retails for $249.99 plus tax. This Acoustic Audio Xtreme Series package includes an 800-watt mono amp, amplifier wiring kit, 500 watt 10" sub, and a sealed 10" enclosure that all combine for some heavy low-frequency reinforcement in your vehicle. Just add speaker wire, and you've got a complete system that will transform your music on the road. The mono amplifier drives your subwoofer system with 400 watts RMS power. The thermal management system dissipates heat and saves power, so this amp will run reliably for years to come. The low-pass filter puts you in command of the frequencies that reach your subs, while the variable bass boost is armed with plenty of low-end punch. The preloaded and prewired (4 ohm) enclosure features high-grade, MDF construction and is specially designed to combat resonance by reducing vibrations. Complete with a full 1 year warranty and our 30 day money back guarantee.