1, LM1875 is one of the most commonly used power amplifier chips, designed for mono, not only has the advantages of mellow sound quality and high power, but also has a complete protection circuit, in the same type of chip belongs to the high-grade model.
2, LM38863TF is a high-power audio amplifier chip launched by NS Corporation (National Semiconductor Corporation of the United States) in the early 1990s. ? The main parameters of the chip: the operating voltage is ±9V~±40V (recommended ±25V~±35V?) When RL=8Ω, the continuous output power reaches 68W (peak 135? W). If the output power can reach 100W when connected to BLT, and its distortion is less than 0.03%, its internal design has a very perfect overconsumption protection circuit. ? I am also using the chip, its timbre is very sweet, mellow sound quality, quite a tube charm, suitable for playing more soft music. ? NS company also has LM1875, LM1876, LM4766 and other familiar chips, of which LM4766 is the latest