The sound quality is very good and there is no distortion. With this class A power audio circuit, I did the simplest thing and you don't need much knowledge about electronics. Unlike the amplifier circuits in the previous videos, this circuit does not have direct current into the speaker which is very good for the speaker. At the same time you have heard the sound of class A, B, AB, C, D, G, H... the sound quality of Class A Amply is considered to be the best sound quality with high fidelity. and quite sweet. How to do it, you should follow step by step in the video. and then enjoy your fruits. you need NPN d718 transistor, 1k resistor, 10Ω 10W power resistor, capacitor, and strong power supply to reduce voltage drop
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