Gets to the heart of the action with mind-blowing THX-certified realism. The MegaWorks THX 5.1 550 speaker system delivers ultimate 5.1 surround sound in movies and games. Designed to put users at the heart of the action, it meets stringent THX certification requirements for performance and reliability. Its 5 wall-mountable, magnetically-shielded satellite speakers with precision 3.5-inch drivers give ultra-smooth frequency response. The wood subwoofer has dual flared ports and a heavy-duty, 8-inch long-throw driver to deliver the low frequency effects required for 5.1 movies. For incredible playback levels, 6-channel BASH amplification offers up to 500 Watts of dynamic power. The multifunctional-wired remote control manages master, center, rear, treble, and subwoofer levels. It also features a headphone output for private listening.