Hi John,
I have used a 15" LCD monitor with my KN7000. The display is larger than the KN screen but does not fill the monitor screen and is not particularly clear. You will need a monitor or computer video card that accepts a composite video signal as this is what is output from the KN7000. The result is somewhat inferior to a Yamaha Clavinova demo I attended recently and I presume the Tyros gives similar results. I guess this is one area where the KN7000 technology has been overtaken.
Len