4 layers326.3 × 76 mm

Mini project
Mohit623148/analog-parametric-equalizer
5-band analog parametric audio equalizer using State Variable Filter (SVF) topology — LTspice simulation + KiCad schematic & 4-layer PCB
89 parts1MIT
KiCad boards from 2 GitHub repositories tagged “state-variable-filter”, the most starred first; open any of them in PCBKit.

Mohit623148/analog-parametric-equalizer
5-band analog parametric audio equalizer using State Variable Filter (SVF) topology — LTspice simulation + KiCad schematic & 4-layer PCB

KamikazeVildsvin/The-Ping-Ting
Three high-Q state variable filters with clipping. Used for filter pingning.