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Direct injection

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Direct Injection - also known as D.I. may refer to: Direct Injection Unit:

  • a method of music production whereby studio instruments, especially bass guitars, can be plugged directly into a mixing console for a better, more present signal and sound. This is as opposed to miking up a bass amplifier.

It converts the High impedence(HiZ) output of a electric guitar pickup, to a low impedance(LoZ) output, suitable for connection to a microphone/line input of a audio mixer.

This techinque was developed by Audio Engineers at Abby Road Studios durring the mid 60's for the Beatles.