Version history and release notes for RootControl.
v6.4.0
Latest
Released July 9, 2026
A major update. If you're coming from an earlier version, here's everything that's been added and improved.
EQ & Band Shaping
- Asymmetric band widths — set each band's low and high edges independently, so you can shape bells that are wide on one side and tight on the other.
- Tighter, more surgical bands — bands can now go significantly narrower for precise notching.
- Non-overlapping bands — dragging a band gently pushes its neighbor aside instead of colliding or stacking, so your bands stay clean and readable.
- Cleaner octave moves — nudging a band by an octave shifts its whole region smoothly and moves neighboring bands out of the way.
- Smoother mode switching — moving between Anti-Key and normal EQ resolves any band overlaps automatically.
Anti-Key
- Modal modes + Custom — Anti-Key can now target any of the 7 diatonic modes (Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, Locrian) or your own fully custom interval set.
- Sharper deep cuts — deeper Anti-Key cuts are automatically more surgical, so a strong cut carves out exactly what you want without pulling a wide band of surrounding tone with it.
- Clean, predictable presets — Anti-Key presets now load in a known-clean state every time, instead of carrying over whatever you had dialed in on the band beforehand.
- Reliable on/off state — the Anti-Key toggle now always reflects its true state.
Saturation
- Rebuilt saturation engine — driving the saturation changes the harmonic character of your sound while keeping the level consistent, so you can judge the effect honestly by ear instead of being fooled by a volume jump.
- More drive on tap — the saturation range has been extended for a more audible effect across the control.
- A little reward at the top — a subtle lift eases in only at the very top of the knob, for extra push when you want it, while the usable range stays honest.
- Finer control — the saturation knob spreads its most useful range across more of the travel, so dialing in is easier.
- Per-band A/B bypass — instantly toggle each band's saturation on and off to compare.
- Smart auto-engage — saturation switches on as you raise the amount and off at zero, with a manual override when you want it.
- Refreshed factory presets — the saturation factory presets have been re-voiced to sound great with the new engine.
Metering & Display
- Locked analyzer & panel — the spectrum display and the band controls stay perfectly in sync as you edit.
- Smoother visuals — band regions, curves, and handles track your mouse fluidly for precise, fine adjustments.
Workflow
- Shift+Click exclusive solo — Shift-click a band's solo to instantly hear just that band.
- Correct multi-band solo — soloing multiple bands now combines them properly.
- Clearer dynamics width control — one clearly-placed control governs the dynamics width for a band's dynamic EQ and sidechain.
- Expanded Quick Guide — added tips for the dynamics features.
Fixes
- macOS external sidechain now works correctly in both VST3 and AU, matching Windows.
- macOS factory presets now install to and load from the correct location.
- Anti-Key + root changes — changing the root with Anti-Key on now lands on the correct frequencies, and automating the Anti-Key toggle no longer disturbs your band positions.
- Band drag floor — bands can no longer be accidentally dragged down on top of your lowest band.
- Solo stability — fixed a crash that could occur when soloing across bands.
- Windows — resolved an error some users encountered during installation.
A note for existing projects
Your saved presets and project settings load as expected. Two small things to be aware of:
- If you previously automated the saturation control in a project, that automation may respond a little differently now, due to the control's improved response.
- Presets that used saturation will reflect the new saturation engine, so they may sound subtly different from before — in line with the improvements above.