I believe the PSR740 has 12MB of wave rom whilst the PSR640 has 8MB.

A useful comparison of current models can be found at
http://www.keyboard.on.ca/portable_keyboard_comparison_chart.htm

Dont know how accurate this is, as the PSR1000 seems quite a downgrade with 1/2 of the wave memory of the PSR2000 !

Simon


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Simon G.K. Williams
simon@svpworld.com
Creative Music & Multimedia
http://www.svpworld.com
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