Denon 7.2 A/V Receiver AVR-X4200W, with Atmos and every sound standard you may possibly want, Audyssey self-calibration, 4K/HDR support, wifi/bluetooth, etc:
https://usa.denon.com/us/product/hometheater/receivers/avrx4200w
About 2 years old, in perfect condition, with all cables/accessories and in the original packaging. Selling it for $900. Pics attached.