The true sound of cinemaWith four wireless speakers and 360 Spatial Sound Mapping, our flagship Home Theatre System brings the true sound of cinema home.Learn about the Quad with a Sony expert | Surround Sound | Revolutionary home theater surround soundIntroducing our flagship home theater surround sound system featuring a revolutionary design with 16 total speakers making any space sound like the movie theater.Ultimate surround with 360 Spatial Sound MappingExperience the ultimate in home surround. 360 Spatial Sound Mapping technology creates up to 12 phantom speakers around the room, enabling cinema-style surround sound with just a handful of physical speakers.Enjoy wider surround sound coverageNow more people can enjoy the same immersive surround experience. By using phantom speakers, 360 Spatial Sound Mapping technology achieves wider coverage than conventional virtual surround systems.Upmix stereo content to surround soundSony's new upmixer delivers rich surround sound even from s