Sony develops, designs, manufactures and sells electronic equipment, instruments, and devices for the industrial, professional, and consumer markets. The MiniDisc audio recording format offered a number of appealing features. Half the size of a CD, Sony said that MiniDiscs could be recorded and re-recorded as many as a million times without loss of quality. Compared with cassette tapes, MiniDiscs offered higher digital audio quality while retaining the potential to record your own customized mix of music.