Third, the constant pressure amplifier with a fixed resistance difference amplifier applications: constant pressure amplifier in applications requiring high sound quality is not a large space, mainly used in public radio, background music and other large space, the main role is to cover up the noise and create a relaxed and harmonious The atmosphere of Science and Technology Exhibition Center radio amplifier, in order to reduce power losses in long distance power transmission transmission line requires the use of the output transformer, the higher the voltage the smaller the transmission loss, but due to the power amplifier output transformer, so the sound quality is not very good. Fixed resistance transmission amplifier due to the limitation of only transport within 100 meters, it is generally used in a relatively small space when the sound is much better. Such as hi-fi systems, home theater system, an exclusive private club small area background music. In short, given the resistance amplifiers sound good pedestrian CGV movie theater amplifier, not suitable for long distance transmission, it does not allow multiple speakers in parallel. "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, DTS process, AV amplifier with a common difference amplifier Luo Yu Road subway station amplifier supply, that have AV selection AV amplifier Dolby 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 for a variety of broadcast offer a different sound field effect. Luo Yu Road subway station amplifier power amplifier supply _ _ Wuhan Wuhan Jiuhua Jiuhua video provided by the video Engineering Limited. Video Jiuhua Wuhan Engineering Co., Ltd. (www.jowa-tech.com) strong, credible, in Wuhan of control and adjustment equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving Jiuhua Wuhan innovative ideas will lead into the brilliant video and you work for a better future!