Class AB is suitable for scenarios that prioritize sound quality: high fidelity systems that are sensitive to distortion, do not mind size and power consumption. 

Class D is suitable for scenarios that prioritize efficiency and portability: consumer grade audio devices, mobile devices, and situations where installation space is limited. 

With technological advancements, the sound quality of high-end Class D amplifiers has significantly approached that of Class AB, while retaining their high efficiency advantage, gradually penetrating the mid to high end HiFi market; 

And Class AB still dominates the top high fidelity field. 

Changde Microelectronics provides a variety of audio amplifier tubes and MOSFET products for customers to choose from in response to these requirements.