Class B amplifiers are a type of electronic amplifier that conduct current for half of the input signal cycle, typically 180 degrees. This means that each transistor in the amplifier only amplifies one half of the waveform, resulting in improved efficiency compared to Class A amplifiers. They are commonly used in audio applications due to their ability to deliver higher power output with less heat generation. However, Class B amplifiers can introduce distortion at the crossover point where the two transistors switch on and off. To mitigate this issue, designers often use a technique called push-pull configuration, which pairs two transistors to handle the positive and negative halves of the signal. This design helps to reduce distortion and improve overall sound quality.