The book is the second issue dedicated to integrated low (audio) frequency power amplifiers. The data of the world's major manufacturers (more than 25 companies) of integrated power amplifiers are given (about four hundred items) for various types of electronic equipment (radio and television receivers, communication and telephony equipment, stationary, portable and car sound reproducing devices, electronic toys, sound synthesizers, etc.) without separating them by purpose (if their purpose does not predetermine structural or other features), since their division on this basis by development firms is very conditional.