Google 到了 有兴趣的看一下吧 http://www.tweakheadz.com/catalog-mic-preamps1.htm What is a Microphone Preamp? Think a minute. A microphone actually converts sound energy into voltage. But this voltage is very low, MUCH lower than the voltage coming out of your keyboard or other line level processors. Your recording device can't use this signal unless it boosted massively. Hence the preamp. You already have a mic preamp on your computer, but it's only designed for speech and cheap mic--totally unsuitable for serious work. You might have Mic preamps on your mixer and they may work perfectly. However, sometimes we want a better one than is on our mixer. And if you don't have a mixer and are going mixerless, then you have to have a mic pre. On this page you will see a lot of different preamps that will boost a microphone signal without adding lots of noise. Remember that the Mic Pre is one of the "core" devices that provide for sound quality. You will see that there are many preamps here. There is one for every budget. 我看到有美金30~40左右的耶>< 那个好吗? 有大大可否推荐一下 ※ 引述《ferrarirossa (Sean)》之铭言： : 我买了SM58 然後马上试用没有声音 : 可是同样的插巢换上电脑用的mic就有声音>< : 我是插在电脑上 买一个1/8"的转接头接上去 直接插上主机版上的内建音效卡 : 有什麽地方不对吗?@@ --

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