As all in one solutions go, you simply can't beat the A100 Amplified Bass Tubes by Bazooka. Designed to be a simple-to-install, yet effective upgrade to your car's existing mobile audio system, the BTA8100FHC Bass Tubes package feature a 100 watt, 2-channel amplifier built right in, coupled to a dual voice coil woofer. Since the amplifier has a built in crossover to remove the high frequencies the woofer cannot play from the signal, you get exactly what you need in the BTA8100's-crisp, clean bass and nothing more. When connected to your system, the end result is seamless integration, both electrically and audibly, yielding sound quality your factory autosound system simply can't touch. And now, we have also INCLUDED our universal FAST-9999 and BTAH extension cable, to make installation even easier! Regularly a $49 value, this FAST system is included FREE with the BTA8100FHC.