I know that some of the synthzoners hooked up the pa800 to the sd2. What does that do when you called a piano on the pa you get the piano of the sd2? Also will it work for the s900. I have some of the converted ketron styles in the s900. The ketron styles played on the s900 but through the sd2 will they sound like the if they were being played on a ketron keyboard?

Hmm, a bit confusing but thanks for the help.