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Chapter 3. Creating a Podcast > Audio interfaces/preamps

Audio interfaces/preamps

Many of the microphones mentioned in this chapter require phantom power—that is, they require a device to supply power to them so that they can work. These devices can't be plugged straight into the computer; instead, they must be connected to a preamp device that acts as an input controller between the sound input devices and your computer.

Although these devices add another layer of cost to your podcast setup, they are not terribly expensive, and they also allow access to several extra features you probably didn't even consider. Preamps offer the ability to input any sort of sound into your computer, including inputs from a musical instrument (like an electric guitar) or even inputs from an old eight-track tape that you want to convert to an MP3 file. In short, a preamp computer device allows the input of virtually any kind of audio signal. For everything from making podcasts to recording an acoustic guitar track for GarageBand (a music-creation program for the Macintosh computer), a preamp is a wise investment.


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