WMD Aperture


WMD Aperture

Regular price $349 Unit price  per 

A variable-width bandpass filter with fast and tactile controls.

Aperture is capable of simple filtering, self oscillation FM timbres, nasty acidic squelches, and capturing images of UFOs descending from the heavens on a cold winter’s night.  The concept is a bandpass that ranges from transparent to gnarly, with precision controls that behave under stress, all while being joyful to wreak havoc with.

Aperture works very well as a part of a subtractive synthesizer voice paired with your favorite oscillator as well as a signal processing unit.  Use it as a Eurorack EQ by running drum loops or other program content with full a frequency range through it to help them sit in your mix a bit better.  Pinpoint the exact instruments by dialing in on a narrow frequency band. 

Drive your sound and add unique rhythmic content by adding some feedback.  Sweep any one of it's parameters with direct CV control.

Aperture is a versatile addition to any Eurorack live performance rig as it is a great sounding filter for bass, drums, leads, pads, and entire mixes as an end of chain filter.

This is filter more unique than most  standard multimode filters as it has both high-pass and low-pass filters ran in series.  Each filter is independently controllable in addition to the macro controls that control both sides at once.

Aperture can be used in self oscillation as a screaming, wild sounding oscillator with it's 1V/oct input.  It tracks 4 octaves or so.  Not a precision oscillator by any means, but has a very unique tonal quality as it has two resonance points as well as feeback for the entire filter's circuit.


  • Variable bandwidth via tactile and CV controls
  • Eight pole filter core
  • Independent resonance and self oscillation of both sides of the filter with CV
  • Feedback circuit with two modes and CV 
  • Input level VCA
  • Additional CV for opening the band either side of Center
  • V/oct tracking
  • Temperature compensated
  • Dry / Wet mix for parallel filtering sounds