to 7 recorders and is expandable to 28 drives with the addition of� daisy-chained units.� Your production will be enhanced by the 3707's ability to duplicate 200 unattended CDs before reloading and automatically scan source CDs for errors before duplicating.� The CDRD-3707 records on the fly using the CD to CD copy function and does not require the use of a hard drive.� Other features include auto detection of disc format, job streaming, detection of defective blank media, and verification of successful recording. The duplicator is operated from a keypad that is so simple to use that it's like using a copier.� Even individuals with no recording experience can begin duplicating CDs immediately without making any costly mistakes.�� � �