A:AnswerHDR is the abbreviation for High Dynamic Range. HDR takes advantage of the full range of the 4K resolution. For current models, you would not want a 4K TV that doesn't have it. For a more detailed description on what HDR is/does, I suggest you Google it.
A:AnswerYes, but since there is only optical out you will need to purchase a Bluetooth transmitter with a TOSlink input. I also have an optical splitter so I could output to a soundbar as well.