CD Duplication refers to make copies or master disk by CD burning. These days most of us have CD Burner or CD-Writer on personal computers, using that we can make multiple copies of any Audio, Video or Data CD. On the other hand, CD Replication refers to pressed CDs. In CD Replication process, a stamper is made that puts the information into the molded compact disc. It like the regular ink stampers which are used to make impressions like “Q.C. Passed” or “Paid”, it’s just similar to that. Carried by a conveyor belt, the molded compact discs have a pressing arm come down on them that stamps the information into them.