The thermal resistance of the KIA6210All package CPP-17(Compact Power Package 17pin), designed for low thermal resistance, has high efficiency of heat radiation. The temperature rise of the chip can be reduced, and the influence of the degradation of the features due to the temperature rise at the high output can also be reduced. This stereo audio power IC, designed for car audio use, has two built-in channels to reduce the characteristic difference between Land H channels. In addition, the functions of stand-by and muting, and a variety of protection circuits are involved.