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Modulation / Filter

Fusion Filter

Five distinct filter architectures — classic circuit character and digital flexibility behind one interface.

COMING SOON

Fusion Filter plugin interface

What it does

Fusion Filter puts five carefully chosen, genuinely different filter architectures behind the same AMOUNT, RESONANCE and MIX controls: Diode Ladder, Transistor Ladder, Digital Multimode, State-Variable and Dual OTA / Sallen-Key. Selecting a new engine changes the underlying filter architecture itself, not just a slope or EQ curve, and the switch is crossfaded so engines change over without a click or a dropout.

Each keeps its own character: ACCENT lets input transients push the Diode Ladder's cutoff/resonance response, the Transistor Ladder pushes into saturated feedback and extended oscillation, the Digital Multimode switches cleanly between LP/BP/HP, the State-Variable's MORPH sweeps continuously from LP through notch to HP, and the Dual OTA / Sallen-Key adds oscillation with HARD/SOFT circuit character. A synced or free-running LFO turns any of them into movement, bounded by LOW/HIGH.

Highlights

  • Five distinct filter architectures behind one interface: Diode Ladder, Transistor Ladder, Digital Multimode, State-Variable and Dual OTA / Sallen-Key
  • Click-free switching between filter engines
  • Dual OTA / Sallen-Key engine adds HARD/SOFT circuit character
  • EXTEND relaxes the resonance ceiling on the Transistor Ladder and Dual OTA / Sallen-Key engines for harder, more extreme self-oscillation
  • Built-in LFO modulation of AMOUNT/cutoff
  • LFO movement is additive around the live knob position rather than overriding it
  • LOW/HIGH range controls bound modulation inside a defensive safety corridor
  • Host-synced modulation using grid divisions and deterministic playhead timing
  • Free-running modulation mode using accumulated phase
  • EXPORT MODE — 4x oversampling for higher-quality final renders

VST3 · Windows 64-bit · macOS