With improvement of technology, Power Integrated Circuits (PIC) gets rapid development. PIC is a single chip including high voltage power devices and controlled ICs. Audio power amplifier is an important part of PICs which is widely used in consumer electronic products, and China is the most important market of consumer products and the biggest world manufacture center of the consumer products. We launch a reach on audio power amplifier.The paper focuses on circuit analysis of audio amplifier TDA7294 of ST ...