论文部分内容阅读
一般来说,前级放大器在发烧音响中总被认为是无足轻重的,很多发烧友认为它的作用不大。为追求“简洁至上”的原则,甚至省去前置放大器也是常事。这样做之后,很多人就会发现重播的音乐动态受到压缩,细节丢失,驱动不足。其实,前置放大器在一套音响系统中起着很重要的作用,由于各种音源的输出特性存在很大的差异,而且大多不能与功放的输入阻抗直接匹配,因而前置放大器就起到了不可缺少的平衡和匹配作用,而且还能对信号进行音量音调等各种效果处理及控制。资深发烧友都知道,设计一部优异的前置放大器比设计一台合格
In general, preamplifier in the fever is always considered insignificant, many enthusiasts think it does not work. In pursuit of the principle of “simplicity first”, it is even common to omit the preamplifier. After doing so, many people will find that the replay’s music is compressed, lost in detail and under-driven. In fact, the preamplifier plays a very important role in a sound system. Since the output characteristics of various audio sources are very different, and most of them can not directly match the input impedance of the power amplifier, the preamplifier can not play a role Lack of balance and matching effects, but also on the signal volume and tone and other effects of processing and control. Senior enthusiasts all know that the design of an excellent preamplifier than the design of a qualified