ONKYO TX-NR686 7.2ch AV amplifier with Dolby Atmos support Home Audio Amplifiers

No box, only the main unit, power cable, and remote control are included in this listing.
There is no manual, so please search online for it.
The firmware has been updated to the latest version.

TX-NR686 is a 7.2ch AV receiver that supports Dolby Atmos and DTS:X object audio playback. In addition to its unique sound field correction function “AccuEQ Room Calibration,” it optimizes the listening environment with “AccuReflex,” which is compatible with Dolby Atmos-enabled speakers. It has a wide playback frequency characteristic from 10Hz to 100kHz and can reproduce high-resolution audio sources such as WAV/FLAC/DSD in high quality.
HDMI input terminals: 7 systems HDMI output terminals: 2 outputs (supports 4K/60p) Audio input terminals: 6 systems