Fight Song Revisited

Eurorack Module
Winter 2026

An OTA state-variable VCF configured to add a little bit of hair to otherwise harmonically anemic input signals. A 2-channel input mixer is made available with one input mixing at unity and a second at 2x gain. Following the mix sum is a variable (but never full “off”) asymmetric saturation stage. With nothing plugged into the cutoff cv input, the input sum is normalled to the jack, and the attenuator acts as a cross-modulation control. LP, BP, and AP outputs are available simultaneously for feedback patching experimentation.


︎
Size 10HP
Depth 44mm (with power header)
Construction FR4, Analog SMD
Power +15/-20mA (quiescent)

Filed under:
Primitive Coastal Electronics

---

Prototype