Befaco BF-22 Sallen-Key Filter clean shop demo

£195.00 £165.00


Out of stock

SKU: BFAC0002 Category: Brand:

Product Description

This is a dual Hi/Low pass filter. Inspired by the famous sallen key filter from MS-20 early version.

It has attenuverters (inverter-attenuator) as an addition to the normal CV control in Cut-Off and CV control for the resonance with a little more presence of the resonance than the original. The normal CV control for Cut-Off keeps tracking through 3 octaves.

The ‘Link’ switch connects the input of the second into the output of the first to have it in series


  • Eurorack Compatible
  • Can be powered with +/-12V or +/-15V without changes.
  • Current needs: +12V: 40mA -12V: 35mA
  • Banana or minijack connectors available
  • Selectable HP/LP mode 6/12 dB
  • Cutoff and resonance CV controlled.
  • 17 HP / 47 mm depth


DISCLAIMER: This filter brings to your modular system the character and characteristics of early MS-20 sound: Kick-ass-rocking-dirty screams! It inherited not only it’s amazing sound, but also the MS-20 noise floor. If noise floor is an issue for you, this might not be your filter.


Additional Information

Weight 0.32 kg
Dimensions 15.5 x 11.8 x 11.8 cm