All Services Design & Art audio mastering $20/hr · Starting at $100 Mastering, a form of audio post-production, is the process of preparing and transferring recorded audio from a source containing the final mix to a data storage device (the master). About $20/hr · Ongoing Download Resume Mastering, a form of audio post-production, is the process of preparing and transferring recorded audio from a source containing the final mix to a data storage device (the master). Skills & Expertise Audio Mastering 0 Reviews This Freelancer has not received any feedback.