Currently, I have the Denon AVR 3313Ci receiver, which is a 2012 model. I believe it was one model down from the flagship model at that time, I could be wrong. It is a little outdated, because it has been discontinued, and even at that period had 4k up scaling, but no Wi-Fi or Bluetooth connectivity nor Dolby Atmos. It was review by
Tom Andry, Associate Editor of Audioholics. It would be awesome to update to the Denon AVR X3600H receiver.