Most arranger keyboards have wall warts and were designed this way for economic reasons. The same keyboard can be sold in many countries and the only difference is the wall wart input voltage. Consequently, if the country runs on DC voltage, 220 AC or 120 AC the manufacturer just has to ship the keyboard with the appropriate wall wart and not have to endure a major expense with a different, internal power supply.

Donny, I think that once you get some time on this board, you will really have a lot of fun with it. I'm looking forward to hearing that first song with you performing on the SX-900.

Good luck,

Gary