Powerful Performance - Experience clear and loud music with the DS18 MP4TPBT HYDRO 4" Tower Speakers, boasting 120 Watts max power handling per speaker, ensuring a powerful and immersive audio experience Integrated Amplifiers - Say goodbye to bulky amps! These tower speakers come with built-in amplifiers, providing 2x40w RMS and 2x120W max power to each speaker. Enjoy robust sound without the need for additional amplification equipment Effortless Connectivity - With integrated Bluetooth modules, easily pair your smartphone to the tower speakers for a wireless music experience. Additionally, the speakers feature a secondary aux jack option with 2-channel RCA outputs, offering versatile connectivity options for your audio sources Durable and Stylish Design - Designed to accommodate 1.5-2 inch circular bars, these tower speakers are perfect for various vehicles, including buggies, 4 wheelers, motorcycles, and marine applications. The solid construction ensures durability, while the sleek design is sure to turn heads wherever you go User-Friendly Controls - Seamlessly control your audio experience with compatibility with the DS18 remote, RKS-BT. The speakers provide easy-to-use controls for convenient adjustments, allowing you to tailor your music to your preferences effortlessly Are you needing really loud tower speakers but have no room for bulky amps or radio? DS18 now has their first tower speaker that has both built in amplifiers and BT modules so all you need is power and ground connections are you are good to go. Perfect but not limited to buggies, 4 wheelers, motorcycles, and marine!