Casio CZ/ VZ/ FZ - Pro Series

>Justin is right , The Roland D range of synths have great piano patches , 
>they dont just stop at the D70 .The D10 ,D20 D50 etc all have very similar 
>voices ,plus velocity and I believe after touch

I'm curious about the D-series synths but I've never been able to get clear 
information on them.

I know how the D50 works, but how different are the D5/10/20 from the 50?  
All I've heard is that they've got different waveforms and don't sound as 
good, but other than that it's hard to come across real information.  I know 
the voice architecture is similar (up to 4 partials of either analog 
emulation or PCM waves) but I don't know much else about it...

Also I've heard that the D70 has some sort of weird waveform modulation that 
can create a lot of new sounds based on the PCM samples, does anyone have 
any details on this?  Is it similar to the transwaves in Ensoniq synths 
(loop point modulation)?

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