the psr6300 was before Yamaha and all the other companys went to sampled sound technology. The PSR6300 was using FM digital sounds like in the DX9 keyboards from the early 80's. The PSR740 is definetely the better keyboard for all features and sounds. The new keyboard for Yamaha which replaced the PSR740 about a year ago is the PSR2000 and is a large upgrade from the PSR740 in terms of features, improved styles and sounds, and a much better front panel layout and screen.
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)