A:AnswerIf you do not have an audio receiver, it probably will work very well! I have a receiver and a Bluetooth device that transmits to my hearing aids, but it doesn't work well over cable stations. It works just fine when streaming.
A:AnswerWe had an old flat mount. We upgraded to a swing out mount for easier connections behind the tv when needed. With our old flat mount it was hard to work behind the tv.
A:AnswerHi DocSavage44 - For the best audio experience, we suggest using an HDMI connection; however, you can certainly connect via Optical for Dolby Digital 5.1 if needed.
~ Samsung Specialist
A:AnswerI don't know the answer to your 2nd question but have not needed to try this setting. My 4-year-old Vizio sound bar connects to this TV with a digital optical cable. There is also a single input on the TV for a 3.5mm cable. The TV provides ready access to Netflix. I don't know about stick.