"AV" is a recent runaway amplifier out of a dark horse, with a big screen TV, the popularity of a variety of image carrier, people "sitting at home watching the movie" The growing demand for, then set all kinds of audio and video functions in multifunctional amplifier emerged. "AV" is the English AODIOVIDIO namely audio and video starts initials. "AV amplifier" from birth to the present, through the Dolby Surround, Dolby Pro Logic, AC-3, the lowest price of the power amplifier, DTS process, the difference between ordinary AV amplifier power amplifier, AV amplifier that has Dolby AV Pro Logic decoder, AC-3, DTS decoder, and a five-channel power amplifier. As well as the finishing touch of the digital sound field [DSP] circuits, amplifiers, provides for a variety of broadcast different sound field effect. 3, AB class amplifier and power amplifier compared to the first two categories, AB class amplifier can be said to compromise on performance. Class AB amplifiers typically have two bias when no signal also has a small current through the output transistor. It signals hour with Class A mode, optimum linearity, when the signal up to a certain level automatically converted to Class B mode of operation in order to obtain higher efficiency. Ordinary machine 10 watts Class AB class spent about A work in less than 5 watts, the amplifier wholesale supermarket, due to listening to music require only a few watts of power, so most of the time in class AB amplifier with a Class A amplifier operation mode only when the music is transient forte to category B. This design can get good sound quality and improve efficiency to reduce the heat, is a rather logical design amplifier wholesale supermarket, Wuhan PA system (certification), the 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.