They all have mic preamps built into the XLR inputs, and at least one output for monitoring speakers or headphones.Ĭompared to a built-in sound card, you’ll almost always get higher sound quality when using an external audio interface (essentially an external sound card) as well. If you want to simplify it, you’re converting XLR to USB (in the case of a microphone). They can vary in quality, features, inputs & outputs, and more. your voice) into a digital signal for your computer. A USB audio interface lets you convert your analog audio signals (i.e.
