The Onkyo TX-DS 797 is an audio-visual receiver that was first released in 2001. It is part of Onkyo's TX series of receivers and offers support for various audio formats, including Dolby Digital and DTS. The receiver has a power output of 110 watts per channel and features multiple audio and video inputs and outputs, allowing it to connect with a variety of audio and video sources. The TX-DS 797 also includes built-in AM/FM radio and supports remote control operation.