The first models had a software error. As a result, the recorder could also burn CDRs without a GEMA code. In addition, copy-protected CDs could also be recorded digitally with the recorder.
The device has loud drive noises when playing CDs. This is caused by the installed CD-ROM burner drive. But it has the advantage that with finalized CDRs you can quickly determine whether it is a good blank! If the drive rotates slowly during playback, then the blank is "bad".