power amplifier of audio-frequency 基本例句 音频功放 All the products of REIZ Audio are designed and developed under the lead of Mr. He Qinghua, the First Prize winner of the American National Semiconductor Audio Design Contest.睿志音响所有产品均由美国国家半导体音频功放设计大赛一等奖获奖者何庆华引领设计开发。