Elevate your off-road or marine audio experience with the DS18 MP4TP.4A Wakeboard Tower Speaker Package. This comprehensive, all-elements system includes four durable 4-inch marine tower speakers, a highly efficient 4-channel digital amplifier, and an easy-to-use Bluetooth remote control receiver. Designed to easily resist water, dust, and heavy vibrations, it is the ultimate compact audio solution for your UTV, boat, or golf cart.