Electroform produced from the Master. Impressions are made from the master disc by a plating process. Up to four mother discs can be produced, but for top quality only two are made. These are positive so cannot be used to make pressings, but they can be played. The next step is to produce the stampers.
"I received CD's and MP3 CD's yesterday for the 3 reel-to-reel tapes I sent in. These were pretty old tapes (one around 33 years old) that had not been on a player since the 1980's when my reel-to-reel recorder was stolen and never replaced. One of them, in particular, contained unreplaceable studio performance tracks from a record album I had ..."