Random Source Serge Variable Resonance Filter (VCFQ)

Random Source

Regular price CAD$445.00

The Variable Q VCF (or VCFQ, for short) from Random Source is a skiff-friendly Eurorack adaptation of what is perhaps the most famous Serge filter. It is an effortlessly thick and colorful 12dB/oct multimode filter with ultra-smooth resonance that never ceases to amaze. Amazing tonal variety comes from combining outputs, automating resonance settings via CV, and adding grit using its adjustable-gain input.

Simple filtration is only one of the VCFQ's many uses, however. Its amazing trigger input turns rising-edge pulses into thick analog kicks and toms which roughly track notes thanks to a dedicated 1V/oct input. This module also becomes an ultra-powerful modulator in "Lo" mode, with decaying/syncable LFOs well within grasp using the trigger input, along with free-running oscillation when self-patched. When fed stepped sequences, sample and hold, or other LFOs, the VCFQ can even function as an effective slew limiter. And that's not all: for those lucky enough to own two VCFQs, dual-peak resonance and an ultra-thick 24dB/oct low-pass mode offer some of the most rewarding synth sounds in existence. In short, adding a VCFQ to one's Eurorack system is always worthwhile.

  • Width: 14HP
  • Depth: 26mm
  • Power: 50mA @+12v / 50mA @-12v
  • Manual
  • Analog multimode filter designed in collaboration with Serge Tcherepnin
  • Automatic Gain Compensation and Variable Gain audio inputs
  • Trigger input
  • 1V/oct and attenuverted frequency CV inputs
  • Attenuated Q CV input
  • Low Pass, Hi Pass, Bandpass, and Notch outputs
  • Hi/Lo range switch
  • Skiff-friendly

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