A:Answerhttps://www.bestbuy.com/site/tv-home-theater/hdr-tvs/pcmcat748301738096.c?id=pcmcat748301738096
is a link that explains HDR. Its a better version of 4K. Usually better darks and better whites
A:AnswerThe tv does not come with a sound bar. But the regular sound is very acceptable unless you want to listen to super classical music. I would try the regular sound first, and if you want more, you can add a sound bar later very easily.