Estimated disc life is 30 years, but a strong magnet near the disc can erase data. For example, if an audio signal has two sounds that are about the same frequency, and one sound is louder than the other, the quieter sound will be inaudible due to masking. The higher the version number, the better the sound. Some reviewers have claimed that version 4.5 sounds essentially the same as compact discs when playing a musical program. Earlier versions are said to be near-CD in quality, and much better than MP3.
All versions are compatible.
There is a slight generation loss when tracks are copied or bounced. TAPE Let's compare MiniDisc to other recording formats. MD recorders are faster to work with than tape recorders. In contrast, a tape recorder is slower because its data is sequential. You must fast-forward or rewind to the part you want to hear.