China high quality switch power supply power amplifier
USD $80 - $180 /Set
Min.Order:10 Sets
Zhengzhou Demac Imp & Exp Co., Ltd.
Public Address System PA System PA Amplifiers , which is short for Public Address Amplifier, is used to increase the audio signal of audio sources in public address systems. PA Amplifiers It can be used in public places like schools, hospitals, shopping malls, stadiums, etc. PA Amplifiers It works by taking energy from a power supply and modulate the input signal so as to enhance the output signal. PA Amplifiers PA Amplifiers are usually with high voltage ranging from 70v to 250v because high voltage can reduce signal loss in long-distance transmission.
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