Definition of DI unit
A DI unit (direct input or direct inject) is an electronic device typically used in recording studios and in sound reinforcement systems to connect a high output impedance unbalanced output signal to a low-impedance, microphone level, balanced input, usually via an XLR connector and XLR cable.
DI units are also referred to as a DI box, direct box, or simply DI, with each letter pronounced, as in "Dee Eye." The term is variously claimed to stand for direct input, direct injection (a British term), direct induction or direct interface.
"Traditional guitar amps and speakers are fairly lo-fi devices that squash dynamic range, introduce distortion and narrow the frequency range. In contrast, a properly interfaced direct guitar signal will sound super clean, dynamic, punchy and far brighter." - Guitar.com Magazine
Terms mentioned above
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Questions people ask
Real questions from the Stack Exchange community – follow a link to read the discussion.
- Is it better to use a DI unit or USB audio interface to connect guitar to PC? · Sound Design SE
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- Digital Effects Unit · Sound Design SE
Frequently asked questions
What is DI unit?
A DI unit (direct input or direct inject) is an electronic device typically used in recording studios and in sound reinforcement systems to connect a high output impedance unbalanced output signal to a low-impedance, microphone level, balanced input, usually…
Sources & credits
- Wikipedia: DI unit – CC BY-SA 4.0
- Image by Ashley Pomeroy – CC BY-SA 3.0