If I recall correctly,the oriental models had a large assortment of oriental styles and voices and emphasized them over the conventional styles and voices found on the US and European PSR-1500 models. Essentially, the US and European PSR-1500s were nothing more than a less expensive, or low end PSR-3000.

Gary cool
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)