I have two FireTV sticks, 4K. They do what they do very well, but they do not access the hard drive where I keep my music files (maybe they can though, I have not tried). The Nvidia thingy also has internal storage, memory, 3.0 USB ports, and for the gamers....you can use it as a game thingy. From what I gather, it also has high res audio output, and will convert to Atmos. Looks like it's unavailable right now.