Audio Interfaces

What is an Audio Interface: a complete guideline

Hello everyone! Welcome to musicophobia!! Today, we’re going to have an intriguing talk on a very important subject called Audio Interface. In a computer-based digital audio workstation (DAW), there are various kinds of software as well as recording and music production capabilities and just possessing this makes us feel more privileged than having a studio full of pre-digital equipment. However, despite all of the benefits that software may provide, its sound is heavily reliant on external hardware known as the audio interface. Audio Interface has become a buzzword in the DAW age. This is the most prevalent concern among today’s studio workers. So, What is an Audio Interface? 

What is an Audio Interface?

An audio interface is a piece of hardware that converts microphone and instrument signals into a format that can be easily recognized by our computer and software. The interface also sends audio as a signal from the computer to our headphones and monitors.


There are two main types of interface; Desktop audio interface and Rackmount audio interface. 

Desktop audio interfaces are for personal use only. This is great for DJ setups where we need only 2 to 6 tracks. 

Rackmounts are for project studios or professional recording studios. These interfaces are more specialized and oriented for serious recording. They have higher horsepower and are controlled by DAW software on a computer.

Why is it necessary to have audio interfaces?

If you desire to record on your computer software employing microphones, a guitar, or a keyboard, you’ll undoubtedly require an audio interface. Subsequently, if you’re striving to upgrade the sound quality of your music production, an audio interface is certainly mandatory.

How an audio interface works:

An audio interface is a fundamental tool that serves as the front end to any recording system. For instance, suppose you record a song on your own and something occurs. The mic picks up the sound and transforms it to an equivalent electrical signal. The signal enters into the microphone input by means of wires. It then passes via a built-in mic preamplifier. The low-level signal is amplified to a higher line level, which is essential for recording. Preamp and microphone quality both have an impact on recorded sound quality.

The signal is then sent through an analog-to-digital (A/D) converter, which encodes it to digital audio data. Digital Audio Data is a series of ones and zeros that may be sent to your computer through thunderbolt or USB connections. The data is then transmitted to a DAW or other piece of software. Almost immediately, the newly digitized audio is delivered to the audio interface, where it undergoes the opposite rapid transformation. It is changed to an analog electrical signal using a digital to analog converter.


Most audio interfaces also include MIDI inputs and outputs, which may be used to link a MIDI keyboard or controller to a computer. The MIDI inputs enable anyone to operate any software-based instrument you choose to perform. Outputs offer users to connect any external sound source, such as a synthesizer or drum, to your computer.


Sampling rate and bit depth:

Sampling rate refers to how often the A/D converter ‘looks’ at the audio during the digital conversion process. Typically, it is expressed in units of kilohertz, where one kilohertz equals one thousand samples per second.

Bit depth is a measure of how lengthy digital words are, and it is to characterize each of the samples. Anyone who cares about sound quality should be aware that the greater the number, the finer the sound, and the bigger the file.


There is a momentary interruption that is referred to as latency. Latency occurs when audio travels into the computer for a few milliseconds and the computer blacks out at the interface output. It may be disturbing for anybody to hear his or her voice returning later than usual. One approach to minimize latency is to change the audio buffer in the DAW. The smaller the buffer, the lower is the latency.

Sound quality:

We’re dealing with an audio interface here, so the quality of sound is critical. That is why the converters and mic preamps are the most significant elements of any interface. Steinberg interfaces are well endowed with suitable mic preamps and high-range converters for persistently outstanding sound performance.

Selecting an audio interface:

Before buying an audio interface it is a must to know “What is an Audio Interface?” Additionally, here is a checklist of questions to consider when considering purchasing an audio interface:

1) What kind of connection is provided by the computer (USB, Thunderbolt)?

2) How many microphones will be used concurrently?

3) Does the artist in another room need separate headphone feeds and talkback?

4) Is anybody interested in recording at a high sampling rate?

5) Does it need additional features such as MIDI or reamplifying outputs?

selecting an audio interface : what is an audio interface??

Here’s a quick rundown of audio interface brands.

Apogee Duet Audio Interface

apogee duet audio interface
Apogee Duet

Built with quality and simplicity in mind, the duet I/O suite offers only analog I/O, headphone output, and MIDI over USB.

Connection type: USB 2.0

I/O: 2/4 (2x mic/line in, 2x line out, 1x Headphone out), MIDI (over USB)

Street price: $649 USD

Apogee Symphony Audio Interface

Apogee Symphony audio interface
Apogee Symphony

Connection type: USB-C

I/O: 10/14 (2x mic/line-in, 2x line out, 2x Headphone-out, 8x optical I/O), MIDI USB

Street price: $1495 USD

Arturia Audiofuse

Arturia Audiofuse audio interface
Arturia Audiofuse

Connection type: USB 2.0

I/O: 14/14 (2x mic/line-in, 2x photo in, 4x line out, 2x headphone out, 8x optical I/O 2x S/PDIF/O) MIDI I/O

Street price: $599 USD

Audient Evo 4

Audient Evo 4
Audient Evo 4

Connection type: USB 2.0

I/O: 2/2 (2x mics/ line in, 2 line outs)

Street price: USD $179

Audient Evo 8
Audient Evo 8

Audient Evo 8

Connection type: USB 2.0

I/O: 4/4 (4xmic/line, 4 line outs, 1 instrument in)

Steet price: USD $ 269

Behringer UM 2

Behringer UM 2
Behringer UM 2

Connection type: USB

I/O: 2/2 (1x mic/line in, 1x instrument in, 2x RCA/ headphone out)

Street price: $39.99 USD

Behringer UMC22:

Behringer UMC22
Behringer UMC22

Connection type: USB

I/O: 2/2 (1x mic/line in 1x instrument in, 2x line/ headphone out)

Street price: $59.99 USD

Focusrite scarlett Solo:

Connection type: USB

I/O: 2/2 (1x mic, 1x insteument/line, 2x RCA/headphone out)

Street price: $109.99 USD

Focusrite Scarlette 2i2:

Focusrite Scarlette 2i2
Focusrite Scarlette 2i2

Connection type: USB 2.0

I/O: 2/2 (2x mic/line in, 2x line headphone out)

Street price: $159.99 USD

M-Audio M-Track Solo
M-Audio M-Track Solo

M-Audio M-Track Solo:

Connection type- USB 2.0

I/O: 2/2 (1x mic/line in, 1x mic, 2x line out)

Street price:USD 49$

We also have the list of the best audio interfaces specially for MAC operating system. Feel free to check here..


A sound interface is more than solely a studio gear or piece of equipment. This is quoted as “the heart” of a studio. Anyone considering purchasing or replacing an audio interface should do some preliminary study before making a decision. This essay hopes to be useful to individuals who are interested in audio interfaces.

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