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Connecting the Guitar to the sound card
Here are three ways to connect your Guitar to the computer:
1)The simplest option is to hook it up to the sound card
The sound card input is designed to accept input from electrical devices which have adequate driving signal; a Guitar does not have enough signal. The input impedance of a sound card is in the order of a few thousand ohms (kOhm), while ideally, you want it to be around a million ohms (1 meg ohm).
2)Another option is to use a Direct (D.I.) box or Preamp. DI stands for Direct Input or Direct Interface. It is an electrically powered box that can be used to match the input impedance of the sound card and the output impedance of the Guitar. The simplest DI box could cost around $20, but there are boxes that could easily cost $200 if you want all the “extras,” too. A DI box has a