I highly doubt KDS is using Sony's cast-offs. Any proof of that statement?
I don't think they do this either. They just license the tech and either make their own or buy the tubes from somebody else that does. However, these are definetly lower quality then what Sony uses. i don't know how much of that is due to using a lower quality tube and how much is due to the other elctronics in the monitor. KDS are junk in my opinion. But I am really picky about monitiors. However, if you just want a monitor thats cheap and gets the job done they are ok. You basically get what you pay for.