The Denon DN-A7100 is a professional-grade AV Surround Preamplifier with extensive audio and video processing capabilities. It is designed for use in commercial installations such as conference rooms, boardrooms, and houses of worship. The DN-A7100 features multiple HDMI inputs and outputs, allowing for seamless integration with modern audio and video equipment. It supports various surround sound formats and offers advanced audio processing features like equalization, delay, and dynamics control. The unit also has RS-232C and IP control capabilities, making it easy to integrate into a larger system. Overall, the Denon DN-A7100 is a versatile and feature-rich AV preamplifier suitable for professional audio installations.