说明：  音频设计一直是大多数电子工程师热衷的课题，在音频设计中人们对完美的追求远远超过对成本的考虑。然而，最简单的电路有时可提供最佳性价比方案。虽然市场上众多新的低功率扬声器彰显出向D类音频性能发展的趋势，但就低成本、低失真和低噪声而言，AB类音频性能仍然最有竞争力。
(Audio Design has been the most enthusiastic about the subject of electronic engineers in the audio design in the pursuit of perfection far beyond cost considerations. However, the most simple circuit can sometimes provide the best cost-effective program. Although the market on a wide range of new low-power speaker underlines Class D audio performance to the development trend, but on the low-cost, low distortion and low noise is concerned, AB audio performance is still the most competitive.)