The Hitachi HT-355 is a home theater system that combines a Blu-ray Disc player, DVD player, and digital TV receiver into a single unit. It provides high-quality audio and video performance, including 4K Ultra HD (3840 x 2160 pixels) support for enhanced visuals, and supports various audio formats such as Dolby TrueHD and DTS-HD Master Audio for a detailed and immersive sound experience. It also comes equipped with Wi-Fi and Ethernet connectivity options, and has built-in streaming services such as Netflix and YouTube. Furthermore, the HT-355 features easy-to-use on-screen menus and remote control options, allowing users to quickly and easily find and select their desired content. Overall, the Hitachi HT-355 offers a complete viewing and listening experience from a single device.