
I finally built something I’ve been wanting to share with you all: Vacuum Tube Basics – a free, hands-on course where you actually control the tubes instead of just reading dry theory. It’s made for audio hobbyists and curious beginners who want to understand what’s really going on inside their tube gear.
Each lesson takes 10–15 minutes and is built around live interactive simulators. You turn the knobs yourself – dial down the heater, sweep the grid voltage, or swap rectifiers and watch the tube respond in real time. Each lesson also includes an interactive “Try this” checklist that ticks itself off as you experiment, plus a quick 4-question quiz. Zero sign-up, and no high voltage near your hands.








