Got he 40" one 5-6 weeks ago and while it's great, the sound isn't, seems to be coming from BEHIND the TV ! OK though, not a deal breaker.
BUT I had to take THREE back for different faults until I got one that worked.

I think this is the model up to the one sold on Black Friday (Thursday was on sale!) sound quality it's terrible but put some speakers with it or a sound bar and you're sorted!

http://www.bauhn.com.au/_literature_150004/B48-63UHDF_-_Instruction_Manual manual here....

someone posted link on other thread which got taken down

1. Power input
2. LAN input terminal
3. HDMI 1 input terminal (Support up to 4K 24Hz/30Hz)
3. HDMI 2 input terminal (Support ARC & up to 4K 24Hz/30Hz)
4. SCART input terminal
5. RF input terminal - To connect the external antenna.
6. USB 1/2 input terminals.
7. HDMI 4 input terminal (Support up to 4K 60Hz)
8. CI+ input terminal
9. Mini AV input terminal
10. Mini YPbPr input terminal
11. HDMI 3 input terminal (Not support 4K)
12. EARPHONE output terminal
13. COAXIAL output termina

Why is ARC not 4k 60hz? but one hdmi has 4k 60hz? so will work with fire tv for netflix 4k?

ARC not 4k 60hz is annoying? i currently plug my devices into my hifi and then send that to tv. this way... will have to plug 4k device into tv and send sound out via optical to hifi? suppose not a massive problem!

assuming optical will be 5.1?

yep 2.5 Digital Output
• Available options: Auto, PCM, Off.