Based on Steiner-Parker VCF schematic.

• All pass, Low pass, Band pass and High pass inputs.
• Frequency with two CV inputs ( CV 1 - attenuator, CV 2 - polarizer).
• Resonance with CV intut (CV R).
• Diode protection on reversed power supply.
• CNC milling front panel (FR-4, 2mm).
• Handcrafted in Russia.