Not that it makes THAT much difference, but the PSR-9000 and PSR-9000Pro(stock) have 126 notes max of polyphony, not 128.

I have had no dropouts on the Tyros1/2/3 or PSR-3000/S900...the 9000 is a different beast.

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