What it is and what it was built for
A 1985 hybrid analog synthesizer built to compete with the Yamaha DX7 by delivering analog depth alongside FM-like brightness — using redesigned hardware and new modulation parameters, not digital oscillators.
How it works, in terms a player would use
It uses two DCOs per voice, two software ADSR envelopes, high- and low-pass filters, two fixed-rate chorus effects, and three sync modes. You select parameters by number and adjust them one at a time with a single edit slider — or plug in the optional PG-800 for direct control. Play modes include two polyphonic, two unison, and two solo — one stacks all oscillators into a monophonic sound.
What it does better than anything else
It bridges analog warmth and FM-style timbres more convincingly than any other Roland synth of its era — especially metallic percussive sounds — while offering six-note polyphony, velocity and aftertouch, and a more robust MIDI implementation than earlier or even later Rolands like the JX-10.
What it does badly
Editing is slow and linear. Only one parameter can be adjusted at a time without the PG-800. The membrane buttons and single slider make live tweaking impractical. The software envelopes are relatively soft — no sharp snap or snappy decay.
What people made with it
The sources do not specify what people made with it.
Who should use it, and who should not
Use it if you need hands-on analog texture with FM-adjacent bite, value MIDI reliability, and are willing to program offline or invest in the PG-800. Avoid it if you demand real-time multi-parameter control or digital precision.
Is it worth your time
Yes — if you want an analog-feeling synth with FM-adjacent textures and polished MIDI from 1985, and you accept its interface as a deliberate constraint rather than a flaw.
