The digital amplifier when the power amplifier has been in the saturated zone and cutoff, as long as the amplifier tube is not damaged, distortion does not increase rapidly, how best amplifier products, 2. crossover distortion and distortion simulation mismatch Class B in the past zero distortion, which is due to the nonlinear characteristic of the transistor at low currents caused distortion in the output waveform at the positive and negative cross (small signal transistor will work in the end zone, amplifier, no current flows through, leading to a serious distortion of the output) power amplifier The output and input impedance of the speaker is also the same. Although both have some slight deviations will not have a significant effect on the sound quality, but only the output power amplifier will have an effect, but it must be reminded that if the speaker output impedance amplifier input impedance is lower than a lot of the time, will result in a significant increase distortion serious when will damage the amplifier. So we still try to choose between a good agreement. Finally talk damping match. The so-called damping, best quality amplifier, power amplifier output stage is a measure of damping resistance for speaker indicators. If the damping is too high, the speaker's voice come out dry, not mellow; if low, according to the sound selection amplifier is prone to stick together sound feeling. So we are doing amplifier configuration, should pay attention to stone damping control in 30-40, danji the resistance is high because of their own, must not exceed 10 PA PA works | Wuhan multimedia project (certification) | amplifier is provided by Wuhan Engineering Co., Ltd. Jiuhua video. Video Jiuhua Wuhan Engineering Co., Ltd. (www.jowa-tech.com) is a leader in Wuhan, control and adjustment of the equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Jiuhua video in Wuhan leadership with the staff warmly welcome all inquiries negotiations to create video Jiuhua Wuhan better future.