A:AnswerNo there is no place to plug it in.
Now for example a PS4 and you want to plug in regular 3.5 mm jack into your controller the sound will then go into your headset.
A:AnswerSorry, I don't know the exact size. I will say that as long as you have a compatible flat screen tv mount, it'll come with correct hardware being that it supports the tv size.
A:AnswerHeight with stand is 36.1."
Height without stand is 33."
You can find more information under the product specifications list.
It's a beauty tv, and the sound is decent for a bedroom, I don't recommend it for a family room unless you have a sound bar or surround system. Nice! Picture quality and looks great.