My Cart

Mini Cart

BMC034 - Switched Resistor VCF PCB | Barton Musical Circuits

BMC034 - Switched Resistor VCF PCB | Barton Musical Circuits


This is an all analog filter module that employs resistors with analog switches to control frequency cutoff.

This is a PCB only suitable for multiple formats.

- +
Availability:In stock

This is a voltage controlled filter module which utilizes analog switches to adjust the frequency of the filter. The module features two state-variable filter sections which share a common frequency control, these can be used in series for heavier filtering or in parallel to work with stereo sound sources.  It has the following controls and I/O:


  • Frequency – Controls the frequency of both filters.
  • Frequency Modulation – Attenuates a modulating cv input for the frequency control.
  • Resonance 1 – Controls the amount of emphasis on the selected frequency of the filter for channel 1.
  • Resonance 2 – Same, but for channel 2.


  • Clock – An oscillator should be input here, it will be used as the clock for the analog switches in the circuit. Pulse waveforms should not be used.
  • CV – This is the input for the frequency modulation CV.
  • Input 1 – Signal input for channel 1
  • Input 2 – Signal input for channel 2


  • Low pass 1
  • Band pass 1
  • High pass 1
  • Low pass 2
  • Band pass 2
  • High pass 2

The board features PC mounted pots for less wiring, and mounting holes for flexibility in panel layout. There are Eurorack and MOTM power connectors.

Additional Information
More Information
Brand Barton Musical Instruments
Additional Resources Build Guide

Write Your Own Review

You're reviewing: BMC034 - Switched Resistor VCF PCB | Barton Musical Circuits