Picture and sound that will make you feel like you're in a cinema. Get actual theatre-level Dolby Digital 5.1 if it's programmed into a show soundtrack. 480p, 720p or 1080i resolutions supported via HD outputs. Shift to the time zone of your preference with time shifting feature. Optical Dolby© Digital/AC-3 for a CD-quality sound. Plug an external hard drive into the USB port to turn this receiver into a PVR.* Seamless surfing between standard and high-definition channels. Wider aspect ratio: 16.9 compared to the standard 4.3. Easy interconnection to your VCR and sound system. Interactive TV services: games, trivia, sports, weather forecasts, etc. Alphanumeric search options in onscreen programming guide. Caller ID support (must be subscribed to Caller ID)