You made a good choice buddy. Comparing to the Psr-2000, the S900 is indeed a great improvement. More styles, more live, sweet voices, Articulated voices, Usb audio recorder, overall, it's the closest arranger to the Tyros II.
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Yamaha PSR-SX900, Mackie SRM-flex Portable Column PA System)
Youtube: https://www.youtube.com/@telmogama/videos
"We are Old too quick... and Wise too late."