Google 到了 有興趣的看一下吧 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>< 那個好嗎? 有大大可否推薦一下 ※ 引述《ferrarirossa (Sean)》之銘言： : 我買了SM58 然後馬上試用沒有聲音 : 可是同樣的插巢換上電腦用的mic就有聲音>< : 我是插在電腦上 買一個1/8"的轉接頭接上去 直接插上主機版上的內建音效卡 : 有什麼地方不對嗎?@@ --

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