This is less flippant than it sounds:2.) What's the best way to get the most out of HD800S for atmos content given the devices I have?
-Feed some white noise or rainforest type sound into the headphones or some earbuds
-Put them over or into your wife's ears as she sleeps
-Turn the 4300's volume UP.
Alternately, buy an inexpensive night noise machine and set it up next to the bed. It's sometimes easier to fix the destination than the source.