Back in 1984, this little powerhouse became Casio's first full-fledged professional synthesizer, delivering eight-voice polyphony for under $500 when most rivals like the DX7 cost a fortune—proving you didn't need deep pockets for serious sound design.
Phase distortion synthesis drives its two DCO oscillators, letting you morph waveforms from sawtooth and square to resonant digital shapes via the DCW for everything from warm analog vibes to icy digital edges. Three eight-stage envelope generators—one each for pitch (DCO), phase distortion (DCW), and amplitude (DCA)—offer precise control over evolving patches, with rates from 1ms to a full minute per segment. A simple LFO with triangle, square, ramp, and saw waveforms handles vibrato, plus portamento, noise, and ring mod add classic tweaks; it's got 49 mini-keys in a super-portable black chassis with guitar strap pegs, six D-battery power, one mono audio out, headphone jack, and MIDI In/Out for four monophonic multitimbral parts. Memory holds 16 presets, 16 user patches, and 16 more via cartridge, all editable right on the pegged front panel.
Synth heads still cherish it for those unique PD tones that pop up in 80s tracks and modern productions, though some note the mini keys and limited storage as quirks—perfect if you love hands-on vintage programming without the toy stigma.