The item is discontinued.

Blinds is a 4-channel voltage-controlled signal polarizer. Each channel consists of a polarizer circuit, also known as a four-quadrant multiplier.

This circuit acts like a VCA, except that a negative control voltage will cause the output signal to be inverted, instead of being silenced. Blinds’ outputs are daisy-chained, allowing adjacent groups of 2, 3, or all 4 channels, to be mixed together.


  • Scale, invert and offset up to four modulation signals
  • Mix up to four CVs or audio sources
  • Multiply (ring-modulate) two audio sources, with adjustable carrier rejection
  • “who can do more can do less”: each channel can be used as a plain VCA
  • Size: 12HP
  • Depth: 20 mm
  • Power: 90 mA +12V, 90 mA -12V

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