Hi! This is Jooyoung Kim, mixing engineer & music producer.
Before, we talked about hardware. Today, I’ll begin by introducing mastering. This article is based on my book, Basics of Mixing, published in South Korea.
Let’s dive in!
What is Mastering?
Why do we master audio?
- The loudness of mixed music is too low
- So gain more volume for the mixed music, maintaining the instruments’ balance
Of course, mastering involves many aspects. You can easily understand mastering with the two sentences above.
Simply put, mastering is the final step in music production. It can also be described as packaging the mixed music. The package does not change after mastering.

Room acoustics are the most important factor in building a mastering studio. Also, great quality ADC(Analog-Digital Converter)/DAC(Digital-Analog Converter), speakers and hardware are necessary too.
Building a mixing studio is also expensive. However, in mixing studio, audio hardwares take quite large volumes-they make room acoustics worse.

One more thing, a mixing engineer listens to a song too many times, making it hard for them to recognize problems. Therefore, when you need to master a song or an album, I recommend hiring a mastering engineer.
Nevertheless a mixing engineer should provide a louder monitor file to clients than the mixed file. Due to budget constraints, mixing engineers sometimes have to master their own files.
In this chapter, for those situations, I’ll talk about the process and concepts about mastering.
The full details start next post! 🙂