Dear Stefan: If you first google Yamaha DGX 520 and learn about that Unit, then do the same for Yamaha 620 you will be in a position to post any lingering questions in this Forum. No disrespect is meant, but you should do some "homework" before posing any questions such as yours. Most participants do not own more than one keyboard, and presuming the one they own is one of the two in question, they have no way of really responding without doing some "homework". All this said, please accept my advice in the positive spirit in which it is meant. I look forward to helping you further, so please don't be shy to post future Forum messages. Keep well
