You might want to look for a second hand PSR-3000 which offers USB to device, and mega voices.

I'd stay clear of the PSR-2000...sounds are fine, but the disk drive is old technology now.

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