The Variable Q VCF (VCFQ) from Random Source is a skiff-friendly Eurorack adaptation of perhaps the most famous Serge filter. It is a thick and colourful 12dB/oct multimode filter with ultra-smooth resonance that doesn't cease 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. Features 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 This is the skiff-friendly, SMD version of the Random*Source VCFQ Video: https://youtu.be/Ie5py4ctMN8Product Specs Item Number: 34258 Make: Serge Modular Model: Variable Q Filter (VCFQ) Condition: Brand New Finish: Silver Categories: keyboards-and-synths ⇒ eurorack Function: Filter LFO Oscillator Made In: Germany MPN: SM-VCFQ Modular Grid: Eurorack ⓘ + Dimensions*: 14 HP 26 mm deep Power*: 52 mA +12V 52 mA -12V 0 mA 5V * User contributed details