Befaco BF-22 Sallen Key Filter (B-Stock)

£225.00 £199.00

Assembled Version of our BF-22 module, ready to mount in your rack.

Package include 12″ power cable and Knurlies.

  • Dual-channel Sallen-Key Filter. Inspired by the early MS-20
  • High and Lowpass operation
  • Two CV inputs per channel with a dedicated atenuverter for the first one
  • CV controlled resonance

Height: 3U
Width: 17hp
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Availability: In Stock | Free UK Shipping


The BF-22 VCF is a dual Hi/Low-pass filter inspired by the Sallen-Key filter from the early MS-20.


The module features attenuverters (inverter-attenuators) as an addition to the normal CV control for Cut-off and Resonance, and offers a little more presence in the Resonance than the original. The CV control for Cut-off keeps tracking through 3 octaves.

The ‘Link’ switch connects the input of the second unit into the output of the first.


  • Current needs: +12V: 40mA, -12V: 20mA
  • Width: 17 HP
  • Depth: 30mm (including power connector)
  • Aluminiun, heat-treated front panel
  • Designed, kits prepared and completed modules assembled in Barcelona.

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Befaco BF-22 Sallen Key Filter (B-Stock)

£225.00 £199.00