Fry's offers the Denon 7.2-Channel 4K Bluetooth AV Home Theater Receiver, model no. AVR-X3500H, for $549 with free shipping. That's the lowest price we could find by $216. Deal ends December 22. Features include:

up to to 105 watts per channel at 8 ohms

Audyssey MultEQ XT32 sound calibration

HDR, UHD, and 3D pass-through

eight HDMI in, three HDMI out

802.11n wireless & Bluetooth 3.0

connectivity with Apple AirPlay 2