It is very simply a hi-fi system - with turntable, amplifier, and speakers - cast in concrete.
这是非常简单的音响系统，转盘，放大器-和扬声器-一成不变的。
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As the SACD is increasingly popularized, the current mode power amplifier, compared with the prevalent voltage mode Hi-Fi power amplifier, will have a quick development and bright look in the future.