The Onkyo TX-820 is a stereo receiver that was part of Onkyo's product lineup, primarily designed for home audio systems. It features a robust amplifier section that provides a substantial output power, allowing it to efficiently drive a variety of speakers. The receiver typically includes a range of connectivity options, such as multiple audio inputs and outputs, including phono inputs for turntables, making it versatile for different audio sources. It often supports AM/FM radio tuning with an integrated tuner. The TX-820 is usually equipped with manual tone controls for bass and treble adjustments, allowing users to customize their listening experience. Additionally, it may offer features like loudness control and selectable speaker output for enhanced usability. The design usually emphasizes simplicity and functionality, with a straightforward user interface. Overall, the Onkyo TX-820 serves as a reliable component for users looking to build a solid stereo audio setup.