The power of Yajia am100 amplifier is 180W. According to the relevant information, Yajia am100 is a Japanese brand with a power of 180W, 220V and a tone changer. M50196-001P is a digital keying sound processing chip specially designed by Mitsubishi Corporation of Japan for high-end karaoke machines. Compared with other pitch-changing ICs, Yajia am100 has excellent performance-price ratio, so it is widely used in high-end karaoke machines and video recorders. The basic principle of M50196-001P pitch conversion is: it first performs A-D conversion on the input signal at a certain sampling frequency, and then changes the sampling frequency when outputting.