Erica Synths Fusion VCF V3
Tube-driven 4-pole lowpass filter with mixer and self-oscillation
20 HP Eurorack module
The Erica Synths Fusion VCF is a 4-pole lowpass resonant filter combining vacuum tube drive between filter stages with germanium diode output limiting, producing a warm, organic sound with unique harmonic saturation character. It features selectable 24dB/oct and 12dB/oct slopes, resonance volume compensation, and a 3-input mixer with its own output that can be patched into self-oscillation for drone generation. The result is a deeply musical filter that functions as a standalone instrument.
Features
- 4-pole lowpass resonant filter with vacuum tube drive between filter stages
- Selectable 24dB/oct and 12dB/oct filter slopes via toggle switch
- Resonance volume compensation circuit to maintain signal level at high resonance
- Germanium diode based output signal limiter for organic, warm clipping
- 3-input signal mixer with dedicated Mix Output jack
- Mixer can be patched into self-oscillation by feeding Mix Out back into an input
- Audio input level up to 20V peak-to-peak
- CV input for cutoff frequency (-10V to +10V full span)
- CV input for resonance
- Configurable for +/-12V eurorack PSU or 6VAC Erica Fusion tube heater PSU
- 14HP wide, 35mm deep
- Designed and made in Latvia
Controls & Jacks (22)
- IN3 LVL — Input level control for audio input 3
- Gate Out — Gate output
- Resonance — Filter resonance/emphasis with automatic volume compensation
- OUT1 — Audio output 1
- Record CV — Attenuator for the Record CV input
- IN1 LVL — Input level control for audio input 1
- Mult In — Mult/aux input
- IN2 — Audio input 2
- IN1 — Audio input 1
- OUT2
- CV Out — CV output from recorded filter movement
- IN3 — Audio input 3
- VCF IN — VCF audio input
- OUT3
- CV2 IN
- CV1 IN
- CV1 LVL — CV1 input level/attenuverter
- IN2 LVL — Input level control for audio input 2
- Record — Record button for capturing filter movement
- Mix Out — Mixed output of all inputs
- VCF Out — VCF filtered audio output
- Cutoff — Filter cutoff frequency control
How-To Guides
- Mixer Self-Oscillation Drone
- Warm Tube Bassline Filter
- Germanium Clipped Lead Sound
- Three-Source Mix and Filter Sculpt
- Live Resonance Sweep Performance
- Envelope-Driven Filter Cutoff
- Open Textural Filter on 12dB
- Pre-Filter Tube Saturation
Explore the interactive Fusion VCF V3 panel on BleepDex — tap any control to learn what it does.
