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Audio Interface Features

If you are an expert about the studio, you have to know about the audio interface. It is only a relatively small device, but its use in the recording indeed is not small. The best audio interface will help you to complete the tasks in the professional way (learn more at SoldierStudio.com to find your best).

The sound quality has been good or not depends on many factors, but perhaps audio interface is the most important equipment in the studio system. It is the audio equipment used to exchange the sound from a computer into the audio signals, make the audio signals turned physical waveform (analog) into digital signals (digital). So the quality of audio interface is evaluated on sound quality conversion from analog to digital and back again. However, the sound did not decline much, it depends on the technology conversion (DAC) of the producer that produce hardware, system processing, and chip sampling, etc.

best audio interface


Types of audio interface

Surely, each of us who do not specialize in the field of recording beginning to learn about the equipment in the studio will feel anxious and hesitated to buy a good device that fit the task. On audio interface market, there are now diverse to fit many business purposes, affordability, quality, etc from low level to higher level. So, first, we must see how many kinds of the audio interface we have.

On the market today, there are 4 types that are distinguished through the exchange of information with a PC via the connection.

  1. Connector Thunderbolt: Thunderbolt is a high-speed connection (highest today) and stability are produced on a MAC (Nearly all of the major studios in the world and who are now professional used MAC to work in their studio.).
  2. Fire wire connector: Fire wire is a dedicated signal line with high-speed stability for its multimedia. Moreover, it can help to avoid conflict interference from the other connector on your PC should be ensured for audio input. The good audio interface features this port.
  3. Connector USB: This type, of course, is to communicate with your PC via USB port. As a result, it has the advantage of flexible, compact, easy to install, etc. Besides, the downside is that there can be multiple signal lines by being conflict from the USB connector on your computer …
  4. PCI connector : Communicate directly to your computer from the PCI slot on the motherboard. Currently, this type of production is not as much as previously by the limited mobility of it.

If the driver allows, we should choose to buy the good interface supports AISO Audio, WDM, GSIF, CORE, with the highest sample is now 24bit / 192kHz, have it on hand when you can combine any software professional record today as Logic Pro X, Pro Tools, Nuendo, Cubase, Sonar, Adobe Audition, etc.

  1. Some criteria to consider
  2. Mic Pre-amp:

– Volume (gain): Most frequency, the inexpensive audio interfaces have the preamp with 50dB gain or less. While some of the good audio interfaces have the range from 60db to 80db.

– The quality (loudness): the higher the signal to noise ratio,  the better the sound we can hear. Generally, over 100db is good enough for the stability.

– Phantom power of the condenser mics: sooner or later you will have time to use a condenser mic, so you should buy a condenser mic that integrated with a phantom power.

Some interfaces will not have enough gain for you to record at a moderate level, or it will be too noisy for recording in the studio.


Digital converter (DAC)

– This department transferred digital (computer) to analog (speaker) and vice versa, so its quality is also important for input (when recording) and output (while mixing).

– You should pay the attention to the interface is, leading to the deterioration in quality. However, not every equipment public this index. According to my knowledge, Echo and Apogee both have  the reasonable price with the high quality DAC.

Other criteria

– Driver: the hardware could be better but if the driver is not good, it will lead to many problems. When buying the old equipment, you should be noted that whether it is compatible with the Window you are using or not. Some companies are popular because the good driver such as Focusrite and Echo.

– The number of inputs / outputs we have in an audio interface: You should choose the one that has more than 6 inputs and outputs. Then, in the future, whenever you need to use many instruments or record many singers at one time, it could satisfy you!

– Bitrate: When you record at the high bitrate, you will receive a wider dynamic range. This will also help to prevent the clip. After that, you should mix down to 16bit for the CD. Most of the interface now offers support 24bit.


16 bits = 6 dB per bit dynamic range = 96dB

24 bits = 6 dB per bit dynamic range = 144 dB

The preamp index for some audio interfaces:

  • PreSonus Audio Box (US)

+ Gain Control Range (± 1d0 dB to 35 dB)

+ S / N Ratio (Unity Gain, Ref. = +4 DB, 20Hz to 22 kHz)> 95 dB

+ 24 bit 44.1 or48khz

  • Lexicon Alpha (US)

+ 44dB gain no phantom power

+ S / N ratio not listed

+ 24 bit 44.1 or 48khz

  • Lexicon Lambda (US)

+ 44db gain

+ S/N ratio not listed

+ 24 bit 44.1 or 48khz

Learn more at: SoldierStudio to find out your best audio interface.

Hello, I’m Eric from Soldier Studio. I love to share everything of tips which help you guy.

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