The Sequential OB-6 has been on the market for a decade, co-designed by Dave Smith and Tom Oberheim to pair Oberheim's original voltage-controlled circuits with Smith's Prophet-6 platform. What it has never had is a proper deep editor from its own maker. Sequential ships the synth with a compact panel of shared knobs and a small display, fine for tweaking on the fly, cramped for the kind of patch design that actually uses all six voices' worth of modulation.
Third-party developer Voidcontrol MIDI built the OB-6 Unofficial Editor to close that gap, and until this week it only ran on Windows.
Why did Mac users have to wait?
Voidcontrol shipped the editor as a Windows VST3 plugin and standalone app in mid-June 2026, with a Mac build explicitly promised as in development, according to Synthtopia and Gearnews coverage of the launch at the time. On July 19, KVR Audio reported the macOS version had landed: Audio Unit, VST3 and standalone, built for Apple Silicon on macOS 11 and up, signed and notarized. Given how much production and DJ software runs Mac-first, that's the platform where an OB-6 owner was more likely to actually need it.
What does the editor add that the hardware can't do alone?
Every parameter sits on a single resizable window instead of being buried behind shift-and-turn combos on the real panel, and the sync runs both ways in real time, so turning a knob on the OB-6 itself moves the plugin's controls too. Patches get a searchable library with .syx import and export instead of living only in the synth's own limited memory slots, plus A/B snapshots you can morph between and a polyphonic sequencer with step and free-record modes. None of that exists on the stock hardware.
"Built to solve the problem of getting a hardware synth properly integrated into a DAW session: parameters can be automated with real automation lanes, patches recall with the project."
That's the actual pitch, and it's the same one every serious hardware editor makes: an analog synth that behaves like a plugin inside Logic Pro, Ableton Live, Bitwig, Cubase, Reaper, Studio One or Waveform, recalling state when the session opens instead of forcing manual patch changes mid-session.
Why do unofficial editors even exist?
Because most manufacturers don't build them. Deep, two-way MIDI editors for synths like the OB-6, the Prophet series or older Oberheim gear have historically come from small independent developers filling a gap the factory left open, priced like plugins rather than bundled software. Voidcontrol is charging $35 through July 21, rising to $40 after, with a single license key working across both the Mac and Windows builds, so existing Windows buyers aren't locked out if they switch machines.
