ALM Busy Circuits MCFx2 Dual State-Variable Filter

ALM Busy Circuits MCFx2 Dual State-Variable Filter

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The ALM MCFx2 is a 14HP dual state-variable filter with lots of control, CV inputs and routing capabilities. The filters are mirror images of each other and are based on the original MCF found in ALM's System Coupe—great for blending two filter positions from the same signal, filtering two different signals, or even cross-modulation and feedback for some crazy pseudo-complex oscillating.


  • Dual analog filter module
  • Two independent low pass filters with cutoff and resonance controls
  • CV input for cutoff frequency and resonance with attenvertors and attenuators, respectively
  • 1V/Oct tracking inputs for each filter
  • Link button for linked cutoff frequency and Feed button for feeding filter one into filter two
  • Three outputs each including a low pass, high pass, and a band pass/notch (switchable via jumpers on the back)


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