Building these DIY kits happens on your own risk. We can't do support or give a guarantee for correct function, because that depends on your own skills. Be responsible and check the building instructions before you buy. Thank you!

ThreeTom Modular - Steve’s MS-22 VCF

The MS-22 is a dual voltage controlled filter, inspired by the classic Korg MS-20 filter, with an innovative modulation matrix and one of the highest function-to-hp ratios in the land of Eurorack. This module was inspired by many pleasant chats with tech journalist Steve O’Hear. Head over here for a full product description and demos.


What makes the MS-22 unique
The MS-22 contains two dedicated filter circuits, one low-pass and the other a high-pass. These are configured in series, the low-pass going into the high-pass. This configuration allows for a unique duophonic fighting resonance behaviour (see this demo video). The cutoff frequencies of both filters can be CV’ed. Compared to most bread-and-butter MS-20 clones, the MS-22 is twice the amount of filter condensed down into half the package (4HP).


Furthermore, the MS-22 also possesses the following selling points

• The MS-22 offers CV control over input gain, basically this allows you to either CV the level of filter overdrive or use it as A VCA for signal going into the filter

• The MS-22 offers CV control over resonance, the MS-22’s resonance can also be pushed way further compared to Korg’s MS-20

• The MS-22 has a link switch, which links the cutoff frequencies of the low-pass and high-pass filters in two different ratios. This creates two flavours of band-pass filters, of which the bandwidth can be tweaked and CV’ed. The switch itself also serves as an awesome performance effect as you can use it to create an instant drop. I demonstrate this near the end of this video.

• The MS-22 has a unique modulation matrix that allows to configure many internal patches without using cables. The modulation matrix is designed to encourage happy accidents!


This is a Do-It-Yourself kit, not an assembled module. Building instructions can be found here. All SMT components come pre-soldered, only bigger parts and THT to solder.

Please be aware that the pure Panel/PCB kit includes a blank PCB and you have to source and solder your own SMD parts!

DIY level: medium

ThreeTom Modular - Steve’s MS-22 Dual VCF

204,25 €

  • 0,25 kg
  • Available
  • Ships within 3-5 days1

ThreeTom Modular - Wiretaps v2

As someone who is developing Eurorack modules, I always found it tedious to visualize signals coming from the modular synth on my oscilloscope. The reason for this is that there’s really no convenient adapters for this (well, as far as I know at least). Most workarounds to this problem suffer from two problems: a) They’re usually mechanically unstable, and b) most of the times I would need to redistribute the visualized signal to somewhere else, which requires extra cables and a mult. To alleviate these issues I’ve created the the THREETOM Wiretap, a 2-way mult that you can directly mount onto a BNC connector.

This is a fully assembled Wiretap adapter, no assembly required, just plug and play!

ThreeTom Modular - Wiretaps v2

19,90 €

  • 0,02 kg
  • Sold out at the moment