Deane this is where the "MAGIC" happens on Korg Units! Setting vary drastically depending on your sound system....
DO NOT use headphones....Play at FULL PERFORMANCE VOLUME THRU YOUR PA when you do this...!! I cant stress this enough,
use your own ears and create a general EQ setting globally then go into each and every style and part to create a killer sound to EACH style & save. It will take many hours but when your finished it will be well worth the time and effort.