U hv a new uhd tv, playing larger files, streaming online.
For that, u should get a premium box rather than a low end one.
Since u asked in this himedia thread, i will suggest u get the q10pro:
https://forum.lowyat.net/index.php?showtopic=2807510&hl=There is a small brother version, the q5pro but is 2/8 gb, less memory.
This box is the top of the range for the brand.
2/16 gb, 3d, 4k 60fps, hdr10, 10bit, hevc265, ddatmos, dtsx.
If your playback files are such, the player can handle all of it.
It comes with android 7 and Kodi 17.
With kodi, u can stream 4k and hevc265 videos too.
About audio, if u can, get a real home theater system with a 4k hdr pass thru avr.
Soundbars wont give u the best audio results.
There are a few q10pro users here, with their reviews ane comments, check them.
I will get on hands on it later in the week, will, write something after i have used it for a few days.
Expecting to be good with previous q16 and q5ii experience.