Sylvania 6900DTE ATSC/HDTV Broadcast Set-Top Box Receiver ATSC set-top box/receiver for viewing high-definition broadcasts on HD- and EDTVs (no NTSC reception) Converts digital broadcasts to analog signals for standard TVs Letterbox, zoom, and full output modes for 16:9 and 4:3 monitors Optical and coaxial digital-audio outputs pass Dolby Digital 5.1 surround signals to compatible audio/video receivers and speakers Measures 11.1 x 2.3 x 10.1 inches (W x H x D)