What is a GLASS MASTER and STAMPER?
Replication Process This process is when the music (data) from your CD master (usually a CDR) is copied exactly to a glass substrate best known as a “glass master”. After several steps the result is a nickel plated stamper that will be used in an injection molding machine that will “Stamp” the data image (in the form of pits and lands) in melted polycarbonate plastic.