When I came up with the idea of writing a book on the diverse subject matter of mastering, I was aware from the very beginning that this was an impossible task, as it is extremely difficult to write a book about an audio technology process which mainly requires the use of our ears. This is the reason why most books on mixing and sound technology do not dare to take a deep dive into the subject, and I want to avoid superficial meddling. As the topic is very diverse, I had to delimit the content of this book. This is why I decided that the book will solely be about the presentation of digital mastering processes, with a deeper analysis of the effects. Many people use self-education to begin their journey on this technology, since they do not have the required funds to hire a professional, or they would like to learn the nooks and crannies of the field by themselves. So this book is primarily meant for them in an easily comprehensible manner, but I hope it will provide a lot of useful information that can help skilled audio engineers as well.