Errors with CD Duplication

It is extremely rare that we ever experience any errors from the CD duplication process. Occasionally we do get customers that bring to our attention slight playback errors on their duplicated discs. On further investigation this is usually due to errors that were contained within the CD master the customer supplied and not actually due to errors in the CD duplication

So, the essential thing to remember is that a duplicated CD or DVD can only ever be as error free as the master used. If there are errors on the master then in most cases these errors are also copied to the duplicated discs. To reduce the risk of playback errors you should always master and burn a disc to Philips red book specification. Also using a high quality disc and burning at low speeds is good advice to achieve a master with the least possible errors. It is also good practice to ensure the underside of the disc is not damaged, scratched or marked. Even greasy fingerprints can sometimes cause read errors.

Most CD players have built in error correction which means that sometimes a master disc may play perfectly fine on a CD player even though it contains errors. Most duplication equipment will ignore certain correctable errors but with CD replication the master needs to be pristine. The glass mastering process will not tolerate any digital read errors at all, so even though a CD master may play acceptably on your hi fi there is still a chance your master will be rejected during the glass mastering stage. Any errors are usually identified by an Eclipse report prior to the glass mastering stage.

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