DESC: The Bose 321 Entertainment System uses two advanced Gemstone speakers and an Acoustimass low frequency module to produce powerful home theater surround sound that rivals the quality of most high-end five speaker solutions. True digital 5.1 decoding means that any surround sound signal is immediately recognized and output through the 321 Entertainment System in simulated surround sound that could fool George Lucas into thinking it was a 5.1 system. The media center houses a progressive scan DVD player and an AM/FM tuner to boot.