Euro Serge VCFQ PCB/Panel

The Serge Extended Variable Resonance filter (VCFQ) is probably the most famous filter of the Serge system and one of the essential Serge modules. It is an excellent, extremely versatile general-purpose VCF that provides simultaneous low-pass, high-pass, band-pass and notch (band-reject) outputs combined with unique flexibility. Its trigger in, LOW mode and self osciallation allow a variety of uses from Oscillator to VC processing.

This is a PCB/Panel set in the Eurorack format.

Availability: In stock




The Random*Source version of the filter is a licensed and authorized adaption of the legendary Serge filter for Eurorack. It is an updated design that uses 3 high-end THAT2180 VCAs for superior audio performance - a change that has been approved by Serge Tcherepnin. This module is the “Extended Range” version (VCFX) - a switch (“LOW”) extends the range of the filter into the sub-audio range. The filter may then be used to filter low-frequency control voltages. Triggers applied to the TRIG in will cause the filter to go into damped low frequency oscillations, controlled by the Q and the filter’s FREQUENCY

Specs & Downloads

Specs & Downloads

Manufacturer RandomSource
HP 14
Depth 40mm
+12V 52mA
-12V 52mA
+5V No
Additional Resources Build Guide


Customer Reviews (2)

magicReview by Homokapensis
polystyrene caps? THAT2180? ...this circuit is phenomenal!! makes my other filters jealous!! The VCFQ is a serious build, it wasn't exactly a "easy build" but, well worth the effort!! Im going to buy another one!! ....have a piece of Serge in your system and raise your standards!! Thanks Random Source!!

(Posted on 4/7/2017)
Fantastic module, easy buildReview by Mark Ophidian
Easily the best filter modules I own. Just lovely. (Posted on 6/7/2016)

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