Befaco BF-22 PCB & Panel Set

Befaco BF-22 PCB & Panel Set

Build a powerful dual analog filter with this official PCB and front panel set. Inspired by the aggressive Sallen-Key filter design found in early MS-20 synthesizers, the completed BF-22 delivers resonant sweeps, distorted filtering, screaming self-oscillation, and raw analog character.

Each filter channel can operate in high-pass or low-pass mode and includes dedicated cutoff and resonance controls. Two CV inputs are provided per channel, with an attenuverter on the first input for positive or inverted modulation. A Link switch routes the first filter into the second for serial filtering and more complex tonal shaping.

• PCB and front panel set for the BF-22 Eurorack module
• Dual Sallen-Key analog filter
• Inspired by the character of early MS-20 filter circuits
• Selectable high-pass and low-pass operation
• Independent cutoff and resonance controls
• Voltage-controlled cutoff and resonance
• Two CV inputs per filter channel
• Dedicated CV attenuverter on each first modulation input
• Link switch for serial dual-filter processing
• Designed for aggressive and highly resonant filtering
• Electronic components and hardware sold separately
• Not a complete DIY kit

• BF-22 PCB set
• BF-22 front panel