The BOSE Control Space ESP-00 4CH Line Output Card II 638299-0010 is a wired 4-channel input card designed for home audio systems. Manufactured by Bose in China, this unit is part of the Control Space ESP-00 model and is ideal for connecting various audio components for an immersive listening experience. The compact and high-quality construction of this unit ensures reliable performance and seamless connectivity within your home audio setup.