LS-503 5.1 Channel 6-Piece Surround Sound Speaker System (Black) 5.1 Multi-Channel Powered Speaker System General Features: Black speakers Wooden subwoofer Five satellite speakers Magnetically shielded speakers Dynamic sound Surround and subwoofer volume controls Only for use with PCs with 6-channel sound cards Specifications: 10-watt (RMS) output power (subwoofer) 3-watt x 5 (RMS) output power (satellite) 2.5-inch full range drive (satellite)