1. Display and Quality • High Definition Support: Supports Full HD quality (1080i/720p). • Upscaling Feature: The device enhances the quality of regular channels (SD) to appear better on HD screens. • Sound: Supports Dolby Digital Plus surround sound system for a cinematic audio experience. 2. Recording and Memory (The Most Important Feature) • Internal Hard Drive (HDD): The device usually contains a large internal storage space (often 500 GB or 1 TB depending on the version) that allows you to record hundreds of hours of programs and movies. Electronic Program Guide (EPG): To display the program schedule for up to 7 days.