Class AB amplifiers are a type of electronic amplifier that combines the features of Class A and Class B amplifiers. They operate by using two output transistors, one for the positive half of the signal and the other for the negative half. This design reduces distortion and improves efficiency compared to Class A amplifiers, while still providing better sound quality than Class B amplifiers. These amplifiers are commonly used in audio applications, such as home theater systems and musical instrument amplifiers. Their ability to deliver high-quality sound with moderate power consumption makes them a popular choice for both professional and consumer audio equipment.