The first piano on the PSR1500 and the first piano on the PSR3000 are very different. If you really listen to both playing the same notes, you will hear much more "stuff" in the 3000. There is a great deal more samples in the 3000 live grand piano.
George Kaye
Kaye's Music Scene
Reseda, California
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George Kaye
Kaye's Music Scene (Closed after 51 years)
West Hills, California
(Retired 2021)