Is An Audio Interface Necessary For A Home Studio?

Having the right gear for your home studio is an absolute necessity.

Music production is so computer based nowadays which makes it important to understand software as much as hardware.

Audio Interfaces are optimized for maximum quality audio production, they also act as high quality external sound cards that have inputs for microphones and instruments, which makes them very necessary devices in any recording studio.

What is an Audio Interface?

Basically an audio interface is a piece of hardware whose primary role is to convert analog signals to digital signals,

and to convert digital signals back to analog signals.

Well basically an audio interface is just an external sound card for your computer.

It records analog audio signals like vocals or any instrument plugged to it then converts that analog signal into a digital signal that your computer is able to understand and interpret.

When you playback the audio using your computer, the audio interface converts the digital signal into an analog signal which is processed as sound that you are able to hear from your speakers.

Benefits of using an audio interface necessary for a home studio:

  • improve the sound quality that your computer will record
  • reduce latency
  • allow you to plug in microphones, instruments and studio monitors.
  • allow you to record music like the expert producers do, which changes the dynamics of your work.

Your dedicated sound card that comes with your computer is also able to produce good quality audio but the format of an audio interface gives it much more superiority.

Does an audio interface improve sound quality?

This is really a popular question in the producer community.

When audio signals are sent through an audio interface the playback quality of the audio signal is of higher quality and less noisy.

This is the primary reason why I recommend using an audio interface in your home recordings and mixes.

The converters that come with audio interfaces will convert audio signals a lot more purely and accurately as compared to the degree to which your in-built sound card will convert the same signals.

When you’re not using an audio interface, the audio signals will be processed with your computer’s decent standard built in sound card, which is not a bad thing entirely.

However if you’re recording and producing music with your computer, an audio interface will be a better choice for better audio input and output.

Sound quality when recording will mean the ability of the microphone to pick up the audio signal almost as perfectly as it is recorded. This is one of the advantages that an audio interface will have over your built in sound card.

Keep in mind that the sound quality will also be highly dependent on the speakers or headsets that you are using to listen to the audio.

Input and Output connectors

Most audio Interfaces allow you to plug in microphones, instruments, studio monitors. Hence if you’re looking to record high quality vocals or plug your instrument and use it in your DAW, an audio interface is your best bet.

Most professional record producers use audio Interfaces in their recording process in order to achieve cleaner recordings ready for mixing and mastering.

The beauty is you can connect most audio Interfaces directly to your computer via USB ports or PCMCIA slots.

As a person that takes their craft seriously, I can definitely say that an audio interface is an item every music producer should have whether you are producing from home or not.

Depending on what you’re recording, here are some example cases in which the importance of an audio Interface will come into play:

  • Vocals – Most audio Interfaces have Inputs that allow you to plug in one or more microphones that require an XLR connection to record vocals, most computers don’t have XLR connection ports. Furthermore, In any case that you may have multiple vocalists or have a band ready to record, or a couple of friends that want to record a podcast, the right interface will allow you to connect more than one microphone and be able to use them all at once.
  • Instruments – You can’t directly plug in most instruments into your computer directly therefore an audio interface can act as the middle man between your instruments and your computer. Multiple outputs are very useful, for example most dj’s want to be able to be to set up separate headphone mixes or send audio elsewhere for some more processing, audio interfaces make this possible.
  • Speakers – Studio monitors are the most preferred speakers when it comes to producing music and a personal favorite of mine because they produce an unfiltered flat sound that enables the engineer to judge the sound more objectively and they work best when plugged into an audio interface really well.


In audio processing, latency is a time delay usually in milliseconds that occurs when an audio signal is sent into your computer system and when it emerges as audible sound.

An audio interface accompanied with good audio drivers, the right settings and converters on your computer will reduce latency to a degree, but this may vary case by case depending on things like, analog to digital/digital to analog conversion, digital signal processing, buffering, transmission time and the audio speed in the transmission medium.

Some audio interface manufacturers make interfaces that have what is called Direct Monitoring or Zero Latency Monitoring.

Essentially, Direct Monitoring or Zero Latency Monitoring is the ability to be able to monitor an input signal directly from the audio interface before it goes to your DAW; it allows a person to listen to the input signal immediately with almost zero latency which is great if you are performing live or playing an instrument.

Most DAWs have embraced and implemented Direct Monitoring technology into their software which makes it really easier and more pleasant to use an audio interface as opposed to your built in sound card.

Some interfaces may not have Zero Latency monitoring, so it is important that you check the product specifications of the interface before you consider purchasing it.

If it should so happen that you have an audio interface that doesn’t come with Zero Latency already, you can use these tips to try and minimize latency:

  • Reduce the buffer size in your DAW
  • Raise the sample rate, the higher the sample rates the lower the latency. Keep in mind that increasing the sample rate will also mean additional stress on the CPU
  • Disable the Audio Input device if you’re not recording from external sources.
  • Use ASIO or ASIO4ALL audio drivers on Windows
  • Turn off and don’t use your Bluetooth or Wi-Fi, because streaming audio wirelessly will increase the latency value.

Phantom Power

In the context of music production, phantom power is the electric power transmitted through microphone cables that is required in order to operate a microphone. Most studio condenser microphones require a power source to be able to work hence it is this power that is referred to as phantom power.

It is called phantom power because it works by transmitting power using the same cable that is carrying the audio signal into the system, so it is able to provide simultaneous transmission of both the audio signal and the power to the microphone or audio device using the same single cable.

Most studio microphones run on 48 volts of phantom power. Usually an audio interface will come with enough voltage of phantom power to supply to a microphone.

The most common audio interfaces will typically supply voltage within the range of 11 to 52 volts and will be present on a balanced XLR Connector; however some microphones will only require 9 volts of power but most professional recording microphones will require more than that.

It is wise to check the product specifications, voltage to be exact, of a microphone before directly hooking it into an audio interface in order ensure that your phantom power supply is compatible.

There are microphones available on the market that have internal batteries and some that don’t, it is advisable to remove these batteries if you want to connect the microphone to an audio interface for phantom power.

You may wonder if phantom is going to affect the quality of the sound since the cable delivering the voltage is also carrying the audio signal. well the answer is no, phantom power will not affect sound, however keep in mind that only a microphone compatible with phantom power should be hooked into an audio interface XLR connector supplying DC power to a microphone to avoid any incompatibility issues.

Do I really need an audio interface?

An audio interface is an absolute necessity in computer based audio production and a useful tool if you’re looking to produce music that sonically sounds professional.

Basically you want to be able to compete with the industry standard, when it comes to the final product, which is the actual song that is produced.

Do I need audio interface if i’m not recording?

In a studio setting, yes you definitely do need an audio interface even if you’re not recording because music production work doesn’t just end with recording, you also have to listen and mix what has been recorded.

Furthermore, In order for you to be able to connect your studio monitors so you can work on your mixing, mastering and beat making you will need an audio interface.


Couple of points that you can take away from this are:

  • Audio Interfaces improve the overall sound quality of your computer/system.
  • Audio interfaces allow you to plug in microphones, instruments, speakers and other audio signals to a computer.
  • When an audio interface is hooked into your computer it plays the role of an external soundcard.
  • An audio interface may help you solve the latency problem.
  • Most Audio interfaces will come with phantom power supply capabilities that you can work with.
  • When choosing an audio interface it is important to have the product specifications of your computer, and your equipment in order for you to pick the most compatible optimised to work smoothly with your computer and any other equipment you might want to use with it.

An audio interface is an absolute necessity in computer based audio production and a useful tool if you’re looking to produce professional music.

Basically you want to be able to compete with the industry standard, when it comes to the final product, which is the actual song that is produced.

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