An audio interface is a device that allows you to connect microphones, instruments, and other sources to your computer to record them to your DAW.
It is also used to connect the computer’s outputs, such as speakers and headphones, to monitor the sounds being recorded or played back.
Audio interfaces can also improve sound quality by providing a low noise floor for preamps. Computer motherboards typically do not offer high-quality preamps and can add unwanted noise to the recordings.
An audio interface reduces latency much more than your computer’s built-in sound card.
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