To integrate the keyboard with a iPad or computer. The cheaper psr e463 has this option so why not the Genos and the new psr s serie? This is a real deal breaker for me. If the Psr sx700 had this option I certainly would buy one now I am waiting for the new Korgs. Even the new Medeli akx10 has usb audio.
Hi Frans, I have my sx connected to my iPad via Bluetooth. Somehow I don’t think that’s what you’re referring to, though.