Dive into the world of analog synthesizer design with this comprehensive tutorial on building a voltage-controlled filter (VCF) from scratch. Learn about active filters and resonance as you explore amplification, op amps, and the concept of resonance in filter design. Follow along with the step-by-step resonant filter analysis and build process, including feedback control, volume balance, and distortion management. Gain practical insights into clipped feedback and enjoy a sound demonstration at the end. This video is ideal for electronics enthusiasts and synthesizer DIY hobbyists looking to deepen their understanding of analog filter design and construction.