An Audio Interface is a device that connects your microphones, instruments, and other audio equipment to your computer.

Think of the interface as the central translator and hub of your studio.

Its function is to be the bridge between the world of analog sound and the digital world of your recording software (DAW).

Its main functions are:

1. Audio Conversion: It contains A/D converters (which transform the analog signal from a microphone into digital for the computer to record) and D/A converters (which transform the digital audio from the computer into analog for you to listen to on speakers or headphones).

2. Essential Connections: It offers the necessary inputs and outputs for recording, such as:
   Microphone Preamps: To boost the signal from microphones.
   Line Inputs: For keyboards, mixers, and other equipment.
   Inputs of Instrument (DI): For guitars and basses. Outputs for monitors and headphones. Digital connections (such as ADAT or S/PDIF) to expand the number of channels. Communication with the Computer: Connects to the computer via protocols such as USB, Thunderbolt, FireWire, or audio networks (Dante, AVB), allowing the exchange of audio and MIDI data. Interfaces range from simple models with two inputs and two outputs to complex systems with dozens of channels for professional studios.