Learn the difference between Class A, Class B, Class AB, and Class D audio amplifiers in this short video. See how each amplifier type works with animation. Improve your understanding of audio amplifier circuits, sound quality, and efficiency.
This video explains the 4 main types of audio amplifiers used in electronics and sound systems: Class A, Class B, Class AB, and Class D amplifiers.
Class A Amplifier – Delivers high-quality audio with low distortion. The transistor is always on, making it less efficient and heat-prone.
Class B Amplifier – Uses two transistors that each handle one half of the audio waveform. More efficient than Class A but suffers from crossover distortion.
Class AB Amplifier – Combines Class A and B designs. Both transistors conduct slightly at the same time to reduce distortion while improving efficiency.
Class D Amplifier – A highly efficient digital amplifier that uses fast switching and pulse-width modulation (PWM). Commonly found in Bluetooth speakers, subwoofers, and car audio systems.
This video includes amplifier circuit animations to help visualize how each class works. Useful for electronics beginners, audio engineering students, and anyone interested in how amplifiers work.
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