Connect your Guitar and Configure Source InputIf your setup includes pedals or other gear, it helps to know whether the final output device is providing an instrument- or line-level signal. Choose and configure your input and source settings accordingly. (Check the Setup Guide that came with your system for more information.)To connect your guitar to a Pro Tools host-based system:1 Do one of the following, depending on your hardware configuration:
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If you are using an interface that has a DI input (such as an Mbox Pro), plug your guitar into an available DI input.
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If you are using your computer’s built-in inputs, plug your guitar into an available input.
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If you use a direct box to convert your guitar’s hi-impedance output to a low-impedance signal, connect the direct box to a mic or line input instead of the DI input.2 Make sure to use the correct input on your interface. For example, on Mbox Pro, plug your guitar into front-panel DI Inputs 1 or 2.
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Mbox Pro back-panel 1/4” inputs are line-level only and should not be used with a guitar.1 Make sure you have a pre-amp (such as an Avid PRE®) or similar unit connected to a Pro Tools|HD audio interface. (Note that HD OMNI provides built-in preamps.)2 Plug your guitar into an available pre-amp input and set its source, impedance, and other settings as needed for your setup.
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If you use a direct box to convert your guitar’s hi-impedance output to a low-impedance signal, set the Line/Inst 1 input to Line source or the equivalent on your particular pre-amp.For example, if using a Avid PRE you can plug your guitar directly into the front panel Line/Inst 1 input, then set its source to Inst.