The Denon AVR-1804 is a home theater receiver that was introduced by Denon in 2003. It is capable of delivering 80 watts of power per channel and supports Dolby Digital and DTS surround sound formats. The AVR-1804 also features a built-in AM/FM tuner, multiple audio and video inputs and outputs, and support for analog and digital audio sources. It has a simple and straightforward user interface with basic controls and a remote control for easy operation. The receiver is designed to enhance audio quality and provide an immersive home theater experience.