Many budding recordists have heard the term "direct box," or even used one without really knowing what it does. Maybe you've heard that a direct box (or DI) matches the "impedance" of your devices, but you really have no idea what that means. If all you're looking for is a nice tone from your instrument into your computer, then don't fret--a strong understanding of impedance is not necessary--but, you may want a little back-story to help wrap your mind around the concept (if not, skip to the section about types).
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