Moffenzeef Modular SWARM, A Useless Random Gate Generator With Four Channels

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Swarm by Moffenzeef Modular is described as a completely useless module but at second glance, it is an experimental four-channel random gate generator 

Moffenzeef Modular shows with SWARM, an 8HP module that doesn’t solve a specific problem and according to the developer, it fits perfectly to people with too much money and free time. Yes, a completely different approach to design a module. The objective was to create a unique type of pattern generation module that allows the user to manipulate the overall speed of a series of randomized gate patterns without being able to actually change them directly.

SWARM outputs four random gate patterns that work separately from each other with no clocking or sync possibility. However, the global master clock is here responsible for the timing of the gates and can be controlled with coarse, fine and via CV. Their pulse width can also be set and/or controlled by CV. So basically, the Gate 1 outputs the fastest pattern, while the speed & frequency of outputs 2-4 continue to decrease.

Moffenzeef Modular SWARM

If you flip the loop switch of a gate channel, this pattern will be frozen in a similar manner to a tape loop. The start and end times of the loop are arbitrary yet each time the pattern loops around its reminiscent of something that’s somewhat musical due to the repeating structure. Besides the four gate channel outputs, you also have a square wave (VCO) and clock signal output where the frequency of which is determined by the coarse and fine controllers and the range switch. No clock can be routed inside the Swarm but you can use the internal clock externally via a dedicated output.

An interesting module especially for experimental musicians who prefer designing random sound events. In my opinion, the module is not as useless as the developer says. Ok, the description can be a bit confusing but if you just want something crazy in the system, this is the place for you.


  • master clock with pulse width
  • coarse and fine-tune tempo
  • bipolar CV in for master clock
  • range switch for master clock
  • global pulse width with bipolar CV input
  • square wave VCO output
  • 4 asynchronous randomized gate outputs
  • current limiting and diode protection
  • skiff friendly: low power & shallow mounting depth
  • Arduino compatible with ISP header on the back for reprogramming

Moffenzeef Modular SWARM is available now for $189 USD.

More information here: Moffenzeef Modular

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