Yes it can be done. S912 boxes work well for 4K HDR with HD Audio. I suggest one with Gigabit LAN (1000M).
Be aware not all AMLogic Hardware is created equal. Dirt cheap means corners have to be cut both with hardware components, heatsinks, thermal management and remote controls. As an example take a look here at the MINIX U1 / U9 heatsink and thermal management vs generic AMLogic Boxes:
START HERE - Pick the Right Kodi Box (updated December 2017)
The AML S912 boxes run the hottest of the AML family due to all the processing cores packaged into the SoC.
So with the U1/U9's massive heatsink, you find they run the coolest of the lot and consequently will be the most stable - but for that you have to pay $$
However poor quality heatsink bonding on cheap AML boxes can be improved a bit with a some simply DIY.
All you do is open up the device, carefully remove the heatsink and clean up the SoC and then follow these instructions to apply some proper thermal paste (using Cling Film wrap) to whatever the original heatsink was covering up:
How to Apply Thermal Paste - iFixit
You only need to apply tiny amounts, really no bigger than a match head in quantity. Be carfeful to not apply too much paste and have it spill over to nearby IC electrical components. Silver paste conducts electricity.
I simply bought a 1.5g $5 Syringe of 30% Silver - Thermal paste the SoC (CPU) temp dropped between 15 - 20 Degrees C on a S905 Box.
If you were buying any AMLogic box, the Wireless remotes to get would be something like the MINIX A2 lite or the $14 aftermarket Xiaomi Mi Box.
You will then have one responsive snappy setup.
The new MINIX A3 lite remote has annoying wake from sleep issues.