@umairalizafar
Thank you very much dear for sharing the link. I will look in to it, and see, if I can find some useful info related to my head unit. Once again, thank you.

Exactly! 
Brother, its MA SHA ALLAH Superb; main jitni b tareef karo'on, kamm hai! (of course, considering value for money and best for bucks). Head unit has volume up to 30 levels, however, usually around 3-5 levels, I am comfortable. With 6 or above, volume level rises very much that it becomes unbearable for me
(May be, main ub umer k uss hissay mein nai raha'
)
Some users with Chinese Android head units reported that sound quality of speakers is not good in their rides with that head unit, however, in my case, its excellent, MA SHA ALLAH.
I personally think, head unit has got nothing to do with the quality of sound from speakers. Its the speakers! and voice from them, which speaks for itself. If speakers will be excellent, then I think whether Chinese Head unit or Kenwood, Alpine, etc. systems; sound quality will definitely be good! 