Durable metal housing with an antiinterference design for stable signal transmission and synchronized audio and video, enhancing viewing and gaming experiences. 3.5 mm and optical interfaces support 5.1channel surround sound for external sound systems, delivering rich and immersive audio. Compact and lightweight device suited for home entertainment centers or gaming setups, enabling flexible connections through HDTV, optical, or 3.5 mm interfaces. Designed for gamers and enthusiasts, compatible with gaming consoles to meet user needs. Use scenarios Scenario 1: In a living room gaming setup, connect a gaming console to an HDTV and an external 5.1 speaker system using the optical interface to enjoy immersive multichannel audio with synchronized video. Scenario 2: In a home theater configuration, route TV audio to an external AV receiver via optical for 5.1 surround sound while the video is displayed on the HDTV. Scenario 3: In a PC or mediacenter setup, connect a computer to an external sound system using the 3.5 mm or optical interface to achieve enhanced audio performance.