The Onkyo TX-SR804 is a versatile AV receiver designed for home theater enthusiasts. It features a range of inputs and outputs, allowing for extensive connectivity options. The receiver supports various audio formats including Dolby Digital, DTS, and PCM, enhancing the surround sound experience. With a power output of approximately 100 watts per channel, it is capable of driving a variety of speakers in a multi-channel setup. The TX-SR804 also includes onboard video switching, allowing users to connect multiple video sources and output them to a single display. The receiver comes equipped with various surround sound processing modes and has adjustable equalization settings for audio customization. Additional features include an integrated FM/AM tuner, Zone 2 functionality for multi-room audio, and compatibility with Onkyo's remote control apps for more convenient operation. The design incorporates a range of practical inputs such as HDMI, component, and composite video, along with optical and coaxial digital inputs for audio sources. Overall, the Onkyo TX-SR804 is a capable receiver that provides a solid foundation for a home theater system.