A direct injection box usually matches the impedance between an instrument and a recording device or soundboard. If someone plugs an instrument directly into a soundboard or recording device the signal may sound bad. Using a Soundcraft Compact mixing board with a direct injection (DI) feature, I put this theory to the test.

So I learned that direct boxes match impedance, and that this alters the tone of an instrument. So I set out to test this for myself, and this is what I've come up with:

http://www.soundcli… Direct Injection Experiment MP3