Class AB audio power amplifier is an amplifier architecture that combines the advantages of Class A low distortion and Class B high efficiency. It is currently the most mainstream and commonly used linear amplifier type in consumer electronics, automotive, and audio

Features:
1. Low distortion, good sound quality, suitable for music, vocals, and speech
2. High stability and strong anti-interference ability
3. Simple periphery and wide application
4. ❌  Efficiency is not as good as Class D amplifiers, and heating is more pronounced under high currents
5. ❌  Relatively high power consumption, not suitable for ultra portable long endurance devices

Applications:
1. Consumer audio
    Multimedia speaker, Bluetooth speaker
    Computer audio system, desktop small amplifier
    TV with built-in audio amplifier
2. Automotive Electronics
    Car host, car audio system
    Door horn drive, center console audio output
    (Car grade AB amplifier is very commonly used)
3. Portable and household devices
    Loudspeaker, loudspeaker, microphone amplifier
    Voice devices such as learning machines, repeaters, alarms, etc
    Mid to low end headphone amplifier (headphone amplifier)
4. Industrial and Security
    Security intercom, access control voice broadcast
    Alarm and buzzer driving circuit