Hi-Fi是英语High Fidelity的缩写,中文含义是高保真的意思。本来它仅是评价放音系统高质量地重现音源特性的一个术语,现在常常将一切高质量的音响系统通称为Hi-Fi系统。 Hi-Fi系统一般由节目源、前置放大器、功率放大器和音箱等四个部分组成。这种系统具有较宽的频率范围、很小的非线性失真和极大的动态范围。节目源是提供给放音设备的节目来源,如调频、调幅广播、电视伴音、优质录音磁带、密纹唱片和激光唱片等。前置放大 Hi-Fi is an acronym for English High Fidelity, the meaning of Chinese is the meaning of high fidelity. Originally it was only a term for evaluating playback systems for high-quality reproduction of sound sources. Nowadays, all high-quality sound systems are commonly referred to as Hi-Fi systems. Hi-Fi system generally by the program source, preamplifier, amplifier and speaker four parts. This system has a wide frequency range, a small non-linear distortion and a great dynamic range. The source of the program is the source of the program provided to the audio equipment, such as FM, AM, TV, high quality tapes, compact discs and CDs. Pre-amplification