Which of the following is NOT a benefit of using a Class D amplifier?

The benefit of using a Class D amplifier that is often highlighted includes its higher energy efficiency, meaning it converts a larger portion of the input power into output power, rather than dissipating it as heat. This efficiency often results in smaller physical sizes compared to other amplifier classes like A or AB, as less heat management and larger components are required. Additionally, Class D amplifiers produce significantly less heat, allowing for more compact designs and enabling them to be used in applications where space is limited, such as in portable devices.

However, while modern advancements have improved the sound quality of Class D amplifiers, traditional perceptions suggest that they do not universally achieve sound quality on par with Class A or Class AB amplifiers, especially in high-fidelity applications. Thus, better sound quality is not typically listed among the primary benefits of Class D amplifiers, making it the correct answer in this context. This emphasizes the distinction between efficiency and sound performance, where efficiency and size are significant advantages of Class D technology.