[ Class A ] Audio Amplifier Circuit, Safe use for Long Time Some ideas, And Experiment can be Dangerous. And For that you don't Risk and Damage your self and the Environment, I am a professional in my business with a lot of experience! Every video, even that is completed with compliance with the all safety measures. Enjoy the video and Eat the sweets. WARNING: This video is for demonstration and education purpose only. Each demonstration presents risk and hazards that must be fully understood be