Audio mastering is the process of preparing and transferring recorded audio to a medium for future duplication. The specific medium that receives the mastered audio varies, depending on the intended release format of the final product. This medium is then used as the master copy, from which all further production of the audio material will be based.

More details on mastering can be found on Wikipedia.

For additional information on the mastering services that RL Sound Labs provides please contact an associate at 212.564.0700 or email info@rllabs.com