In short Audio mastering is the final preparation of a song or group of songs before they are released to the public. Check out our section on Mastering Services for a full description.

Stem mastering is the process of level balancing and editing multiple consolidated groups of instruments during the mastering process. It allows the engineer to get much deeper into a mix, and has the possibility to allow for more control over the final master. Read more about Stem Mastering.

Audio mastering is the art of giving your recording a cohesive and professional sound.  It should sound its best in a variety of different listening situations; such as on a home stereo, the radio or internet, in the car or through headphones. Naturally, it should be able to stand up in comparison with other productions.
The resulting final files must be technically perfect and free of artefacts or clippings. Aesthetic considerations aside,the main purpose of audio mastering is to ensure the most optimal sounding production as possible.