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pa amplifier amplifies the speaker which are used to produce sound. Without pa amplifier one cannot produce sound from the speakers. PA amplifiers are mainly used to address a public gathering or public meeting. It allows speakers to produce high sound output. Without Pa amplifiers speakers cannot produce sound .So PA amplifier is integral part of sound system. To produce sound one require a PA amplifier without it sound system cannot be completed.one needs.Pa amplifer is a very vital and important part of sound system since 100 years.
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