Why does a free plugin matter for a 40-year-old synth?
Working Roland JX-8P and Super JX-10 units left the factory in the mid-to-late 1980s and never got cheap since. The used market treats a serviced Super JX-10 as a genuine investment: clean examples change hands well into four figures, and even a rough JX-8P rarely goes for pocket change once shipping and repair are factored in. That scarcity is the whole story behind Morphoice's new plugin, EightyTen: a free, public-beta software emulation of the JX-8P, the Super JX-10 and its rackmount twin the MKS-70, released July 17, 2026, for macOS, Windows and Linux as VST3 and AU.
These three Roland machines share the same DCO-based engine and became a fixture of 1980s synth-pop before getting sampled heavily into the house and techno records that followed, prized for a texture that sits between the softness of analog and the bite of the era's early digital synths. EightyTen doesn't just borrow the name. It rebuilds the circuit.
What's actually under the hood?
Morphoice built two complete synth engines into EightyTen, modeling the JX-8P on one side and the twin-engine Super JX-10/MKS-70 architecture on the other. Each engine carries dual DCOs with cross-modulation and oscillator sync, dual ADSR envelopes with key follow, a multi-wave LFO, a resonant low-pass filter paired with a non-resonant high-pass, and full velocity, aftertouch and key-tracking response. The effects rack recreates Roland's own chorus alongside a tape-style delay, drive and distortion, and a reverb. The DSP itself is written in the Faust language, and Morphoice says the algorithms derive their transfer functions from the actual circuit topology of the hardware rather than a generic model, the kind of detail that matters to anyone who has spent hours arguing about DCO tuning drift on a forum. The plugin also claims patch compatibility with the original hardware, so decades of JX-8P and Super JX-10 patch libraries should load straight in.
What does "free" actually cost you?
There's a catch, and Morphoice is upfront about it. EightyTen is still an early, active beta: the developer has warned that older beta builds may stop working as the software keeps changing, meaning today's download isn't guaranteed to be tomorrow's stable release. The business model is pay-what-you-want on Gumroad, with a $10-or-more contribution buying a lifetime license that covers future paid versions once the plugin graduates out of beta. It's less a finished product than an invitation to get in early, and the goodwill Morphoice is banking on now is what it's hoping to convert into paying users later.
