Designing a double wavefolder from scratch

Build your own as a DIY kit: https://www.ericasynths.lv/edu-diy-wavefolder-2135/ Support the channel... ... through Patreon: https://www.patreon.com/moritzklein ... by buying my DIY kits: https://www.ericasynths.lv/catalogsearch/result/?q=edu+diy Simulation in CircuitJS: https://tinyurl.com/2o3ale33 In this episode, we'll DIY our way towards a harsh & metallic sounding double wavefolder. If you want to build along, here's the bill of materials: 1x TL074 quad op amp 2x BC548 transistor 2x BC558 transistor 1x 220k resistor 5x 20k resistor 4x 10k resistor 1x 4k7 resistor 1x 2k resistor 1x 1k resistor 1x 20k potentiometer 1x 10k potentiometer Chapters 00:00 Intro & what is wavefolding? 02:34 Simplest wavefolder & transistor saturation 10:16 Top/bottom folder 12:42 Buffered folder (& listening!) 15:38 Input stage 17:29 Double (and "2.5x") wavefolder