Boston Acoustics CS2310B Classic Series 5.1 Sub/Sat System (Black) (Discontinued by Manufacturer) High-end components and exceptional surround sound reproduction deliver a full, clear, and tight sound response Includes 4 2-way bookshelf speakers, 1 2-way dual-driver center speaker, 1 10-inch down-firing subwoofer Features DCD technology, capable of reproducing more bass from less amplified power 5-way gold-plated binding posts Black walnut vinyl finish