What Is Audio Mastering: The final part of the story. Mastering gives your mix a final professional finish that separates it from any other production. The process that a mastering engineer does will differ from track to track depending on how it sounds and what it needs. Our engineers use a combination of high end mastering equipment such as UAD digital software, analogue outboard gear such as TL Audio C1 and a classic Otari status 18R. All this along with well trained ears and a professional acoustically treated studio to guaranty the best results every time.