Casio CZ/ VZ/ FZ - Pro Series

> The Casio CT-6000 from 1984 was Casios first keyboard with
> velocity sensitive keys and midi. It also has very versatile
> accompaniment and can layer sounds. I always thought it was based
> on Consonant-Vowel-Synthesis (crossfaded stair waveforms with
> analogue filter, like MT-65), but some people claim it was based
> on phase distortion. The first official PD preset keyboard
> (marketet as such by Casio) was its even bigger successor
> CT-6500, which (how silly is this!) had no velocity sensitive
> keys anymore. I yet haven't bought a CT-6000 (takes much space),
> but it seems to be a true technical milestone.
>
> - What are the main ICs?
There's one of these at my local Music-Go-Round. Having played around
with it, I can tell you that it's definitely a phase-distortion synth.


> - Is the percussion semi-analogue or sample based?
>
> The sound quality on YouTube wasn't high enough to identify this.
Can't remember for sure, but I'm pretty certain it was sample-based.