A:AnswerYou can hook up your devices into the HDMI inputs on the TV.
Try to use a splitter like the Model: RF-G160, it distributes one HDMI source to two HDMI displays simultaneously.
A:AnswerThis is the type of tv that shows best when looking at it straight on. Some darkening of picture if viewed from side angles. See the explanation of this in the product description where it explains all the screen types.
A:AnswerI am not sure about the tv, have not tried this. But, I know that FireTV itself, as in the separate devices hooked into the tv - do not have a mechanism to control headphone volume. I tried and nearly blew out my ears - it was so loud - and found at this time that is not supported. So, not sure about the tv.