The mixing from a multitrack recording to produce a mono, stereo, or quadraphonic recording as a production master.
"Dear CVC Productions: I waited for years for an obscure Japanese musician's work to be released on a CD. No luck. So I sent my three old, long-play records to CVC for conversion. I now am the proud owner a single CD with the cream cuts off those three albums! Very satisfying. Good work guys! Thank you! "