The application of a variety of new technologies, focusing on enhancing high sound quality performance and reliability, is an ideal choice for a variety of high-demand sites.Using high quality long life components, key components accurately match, and leave enough margin.The improved design, the application of current feedforward and isometric hysteresis two new technology, compared with the traditional power amplifier, reduce heating, reduce interference, enhance reliability.Three high (high efficiency, high speed, high current output) circuit design.Combined with the improved design of the amplifier in absolute safety under the premise of the output of more than 55A current, easy to face a variety of loads, more can reflect the price of high-quality speakers.Perfect and reliable protection function, from short circuit, overload, overheat, dc, delay, distortion voltage limit surge, overvoltage, VHF, etc.