How does it work?

[kwokwai]

I go window shopping... see if I can find a 5.1 stereo of reasonable price!

The shop assistant is nice and when I ask her to show me the 2.1 stereo, she does it, and then she shows me the 5.1 stereo...
good service...:D

What I am interested is that she turns on 1st switch for the 2.1 stereo, and the sound comes out!
And she turns on the 6th switch for the 5.1 stereo...

Do you know how it work? Can we have one of these audio switches at home? :confused: