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现在各种演出中，除古典音乐会之外都在使用扩声，这种情况是自六十年代文革时期的‘样板戏’开始的，此前我国的文艺舞台上很少有用扩声的，当然和那个时候的社会的，经济的，政治的各种条件有关。七十年代中期以前，国内没有专业音响工业，进口限制也很严，当时国家有限的外
In various performances now, sound reinforcement is used except for classical concerts, a situation that started with ’model drama’ during the Cultural Revolution of the 1960s, which was rarely used for sound reinforcement on the art stage of our country before. Of course And at that time the social, economic, political conditions related. Before the mid-seventies, there was no domestic professional audio industry, import restrictions are also very strict, when the country’s limited outside