The AV receiver-based HTP-209 surround sound system has everything you'll need to reproduce the excitement of home theater. For highly detailed surround sound, its VSX-D409 AV receiver features Dolby Digital and dts decoding, and delivers 100 Watts of power to each of five channels (namely, the system's speakers: two front speakers, two rear speakers, and a center channel speaker). And, an 8 inch, 100-Watt self-powered subwoofer delivers the deep bass that can transform a movie or song. When you're listening to mono-processed surround channels of Dolby Pro Logic-encoded or stereo sources, the Expanded Theater function broadens your soundstage and enhances surround sound effects. A pre-programmed AV remote is included for total system control. And, because the HTP-209 is designed as a system, set-up is easy.