I have recently received requests for cassette masters. Why I do not know. We are able to deliver high quality, CD quality, on cassette audio tape. I have un-archived some Nakamichi cassette decks. The Nakamichi CR-7A and CR-4 cassette decks are some of the finest cassette decks ever manufactured for cassette recording. They have been serviced and calibrated. We will be updating the Mixing and Mastering form to reflect this new service addition.