factory hammond B3 voices

[chuckeys123]

I heard this demo of b3 voices on the sx900. Are these factory or expansion 3rd party voices? If they are factory they are so much nicer than on my psr sx770    https://www.youtube.com/watch?v=NEE87IWL20I

[DerekA]

It's not clear from the vendors website if this pack is just carefully programmed registrations using the inbuilt waves, or if there are new wave samples.