Have you ever seen that little button on your audio interface or microphone preamp labeled 48V and wondered to yourself:

What is a “V” and why do I need 48 of them?!

That little button (also labeled at times “phantom power”) is a critical thing to understand depending on what type of microphone you are using in your home studio.

Today I’m going to clearly explain what it is, and why/when you would need it.

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