Dumb question, but I can't find an answer.

[lukeave.]

What is the point of a di box? If I were to get one would it help make my amp louder? How would I hook it up?

[Caca de Kick]

A DI box is to send a bass signal to the PA mixing board (or studio mixing board). The DI box converts a 1/4" cable jack impedance to an XLR (Mic) impedance that the mixing board wants to see.

[bruiser1964]

I'm sure someone will have more tech advice ... but it's to correct the input level of an instrument and your amp or to maintain the signal on a long cable run.
Often used on weak outputs like acoustic guitars.
If you have a good electric bass then you shouldn't need one, unless you are sending a signal to the Pa

[alexwittscheck]

Not a dumb question. A lot of people don't know what it does. It is used to send your basses signal to a mixer. In a live situation, you would do this, so that the sound engineer would not have to mic your cab.

To explain what it does, might confuse you a little, but I will try anyway. It turns your basses unbalanced signal, into a balanced one that can be sent over an xlr (mic) cable. This allows it to be sent much further than an unbalanced signal without getting interference.

[alexwittscheck]

Beat me to it.

[Alex1984]

Also useful for recording BTW.