Gary...it's not unusual for Yamaha to replace the low end arrangers more often than the mid or high end.

New technology, once the R&D is covered, will work its way down to the entry level instruments.

Ian
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.