The Polysonic Entertainment System is designed to deliver a deeper bass sound. The bass emits the same watt as before, but delivers a deeper and richer sound. The vibrations radiate through the speaker system to ensure all low notes are produced. The powerful sound will take your entertainment to the next level and make you feel as if you were in the theaters. Enjoy powerful sounds with Polysonic Home Entertainment Systems.Detailed Description Polysonic MP-3315 Multimedia Speaker System 3.1 USB SD Card Bluetooth and FM Radio AC/DC Woofer black 8000w.