Befaco Pony VCF
Compact ladder VCF plus VCA plus three-channel mixer
6 HP Eurorack module
Pony VCF is a compact 6HP Eurorack module combining a voltage-controlled low-pass filter, VCA, and three-channel mixer in a single unit. Built around the Sound Semiconductor SSI2144 FATKEYS chip using Dave Rossum's enhanced ladder topology, it delivers the elegant warmth of classic transistor filters without associated distortions. Frequency and Q temperature compensation, plus resonance-compensated output level, keep the sound balanced and musical across all settings.
Features
- SSI2144 FATKEYS chip based on Dave Rossum's enhanced ladder topology
- Voltage-controlled low-pass filter with frequency and Q temperature compensation
- Output level compensated against resonance to maintain perceived volume at high Q
- Three-channel audio mixer with individual fader attenuators
- Integrated VCA at the end of the signal chain
- Two filter CV inputs (CV1 with attenuator, CV2 direct)
- Dedicated Resonance CV input
- Dedicated Volume CV input for VCA control
- CV1 MODE SWITCH: routes CV1 to VCA or applies fixed 10V for always-open VCA
- Audio OUT normalled to IN3 for easy self-feedback patching
- Peak meter with green signal-present LED and red saturation LED
- 6HP compact footprint
Controls & Jacks (17)
- Manual Cut-Off Control — Adjusts the cutoff frequency of the filter
- CV1 Mode — Selects between different filter response modes
- CV IN 1 Attenuator — Attenuates or inverts the mode CV modulation
- Peak Meter (Green) — Visual feedback indicator
- Peak Meter (Red) — Visual feedback indicator
- Fader 1 — Volume control for Audio IN 1
- Fader 2 — Volume control for Audio IN 2
- Fader 3 — Volume control for Audio IN 3 (also used for feedback normalling)
- IN 1 — Audio signal input to the filter
- OUT — Filtered audio output
- CV1 — Control voltage input for modulating the cutoff frequency
- RES CV — Control voltage input for modulating resonance
- CV2 — Control voltage input for modulating filter mode
- VCA — Control voltage input for modulating the drive
- IN 2 — Additional filter output or modulation output
- IN 3 — Additional filter output or modulation output
- Manual Resonance Control — Controls the resonance/emphasis at the cutoff frequency
How-To Guides
- Classic Low-Pass Filter Sweep
- Self-Oscillating Sine Lead
- Envelope-Gated Filter and Amplitude
- Three-Source Blend into Filter
- Filter Self-Feedback Growl
- LFO Filter Wobble
- Dynamic Resonance Morphing
- Two-CV Filter FM Texture
- Drum Bus Low-Pass Filter
- Generative Random Filter Drift
Explore the interactive Pony VCF panel on BleepDex — tap any control to learn what it does.
