Learn how to design and build a double wavefolder from scratch in this 22-minute tutorial video. Explore the concept of wavefolding, understand transistor saturation, and construct various wavefolder configurations including top/bottom, buffered, and double folders. Follow along with a detailed bill of materials and step-by-step instructions to create your own harsh and metallic-sounding audio effect. Gain insights into input stage design and discover the unique "2.5x" wavefolder variation. Perfect for DIY enthusiasts and audio electronics hobbyists looking to expand their knowledge of analog sound processing techniques.