Back in 1983, this wedge-shaped pioneer was one of the first sound modules to blend computer sequencing with multitimbral analog synthesis, letting you control external synths via CV/Gate while running sequences from an Apple II or similar vintage computer.
It's a compact desktop unit packing a monophonic lead synth, monophonic bass line, four-voice poly chord section, and seven analog drum voices, all with fixed but tweakable sounds reminiscent of Roland's early SH-series grit—think crude envelopes, basic sustain/release, and a nine-octave range on the synths. A built-in four-channel mixer handles independent outputs for each section, with a ribbon cable connecting to the computer's interface card for software-driven sequencing, clock sync, and up to eight CV/Gate pairs on the rear to drive external monosynths. No MIDI natively, but its hybrid analog heart and Sync24 compatibility via add-ons made it a forward-thinking hub in Roland's early digital-analog experiments.
Collectors cherish its rarity and historical edge as a multitimbral trailblazer, though working units are scarce due to separated cards and floppies—sounds raw and simple, perfect for that authentic '80s computer-music vibe if you can fire it up.