The CZ family was this consumer electronics manufacturer's first foray into the professional synthesizer realm. Casio brought a unique spin to digital synthesis with their digital "Phase distortion synthesis" method (similar to FM). In 1988, Casio replaced the CZ family with their next generation VZ line.
Architecture Class: FM.
Ebay Description:
The Casio CZ-101 is a 49 (mini) key, 8 voice digital synthesizer, featuring dual oscillators (8 waveforms with ring and noise mod), dedicated 8 stage pitch, phase, and volume envelopes per voice, along with vibrato, portamento, 32 presets (16 editable) and MIDI. The CZ101 can be powered by batteries (6 D) or 9VDC adapter.