In Asia karaoke belongs to the culture... We often go to karaoke with our colleagues after office. There are family karaoke and even the plus plus karaoke exist too hahahaha.
Home theatre or complete sound system with good microphone is kinda "must buy" for every household in Asia, if you at least belong to the middle class.
Most of my indonesian friend here who loves to sing, bought their karaoke system in Asia because in Eurepe you just have so small options for KTV-System, and if you found one... it's always with very limited menu selections. In Asia it's always very flexible... you can practically get whatever you like as long as you are ready to pay for it. The cheap and the premium one, both exist :-D