Steve’s MS-22 dual VCF an OTA & MS-20 Filter by ThreeTom Modular Synthesizers

  • By: Thorsten Meyer
  • Date: Monday, 23 September 2019
  • Time to read: 1 min.

Steve’s MS-22 dual VCF

Steve’s MS-22 dual VCF is a dual voltage-controlled filter (inspired upon a classic OTA design) with an innovative modulation matrix and one of the highest function-to-hp ratios in the land of Eurorack. ThreeTom Modular Synthesizers is a boutique Eurorack manufacturer based in Belgium. 

Steve’s MS-22 dual VCF Specifications

  • Dual VCF inspired by the Korg MS-20 OTA filter
  • Low-pass into a high-pass configuration
  • Innovative modulation matrix allows CV control over all parameters
  • Cut-off frequencies can be linked, resulting in a bandpass filter with controllable bandwidth
Steve’s MS-22 filter topology
  • Bipolar monitoring LEDS for the LP, HP, resonance, and gain CV signals
  • Designed to work with unipolar +5V or bipolar +-5V modulation sources
  • Will also take unipolar and bipolar 8 and 10V modulation signals, but this results in a smaller usable range on the ACV and FCV attenuators
  • Low frequency and audio-rate modulation of all parameters


The module Steve’s MS-22 dual VCF is planned to be released in the future. You can signup to be notified when the filter is released here.

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