合并式胆机还需要再加一个前级吗？很多烧友都有这样的疑问。这里有三个因素，一是音源输出的讯号是否大？很多外国CD机输出讯号偏小，加台前级可以放大讯号。二是音箱的灵敏度，灵敏度在90dB以下的音箱，加台前级，声音的表现会更好。三是胆机的放大量，增益30dB的标准合并式胆机，对输入讯号的放大量约15倍左右。而增益为20dB的合并式胆机，放大量约10倍，略显不足，动态会有欠缺。如果你对声音有很高的要求，最好再添一台前级做配套，将合并功放作为后级用。前级可以增10倍放大量，两台机加起来增益可达40dB。这时候，后级会推得更轻松、声音密度高、细节丰富、瞬态更强，音响系统的表现就非常完美了。

Stereo amplifier knowledge is as follows:\n\n1. A stereo amplifier is an audio device that can amplify weak electrical signals and modify and render the sound at the same time. It allows you to hear clearer, more realistic and more detailed sounds. \n2. A s

The wonderful world of tube ampsVacuum tube amplifiers, commonly known as "tube amps", are no stranger to audiophiles. As early as the 1920s and 1930s, vacuum tubes have been used in fever equipment, from amplifiers behind the scenes in theaters to radios in private homes. Indispensable. So today we

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