Don Solaris soundset. Available at: http://www.donsolaris.com/?page_id=211

Casio CZ-1 PatchDemo

Casio CZ-1 MultiDemos

JD-990 Don Solaris soundset available at:
http://www.donsolaris.com/?page_id=284

JD-990 Don Solaris soundset available at:
www.donsolaris.com/?page_id=284

Don Solaris soundset. Available at: 
www.donsolaris.com/?page_id=211

Kurzweil K2000 vs K2600 donsolaris.com article: Sonic Differences Between Kurzweil K2000 and K2600