Panasonic introduces a five-disc CD changer that will not only give users hours of uninterrupted digital music, but will let them create customized digital recordings with no loss in quality. Equipped with optical digital outputs, model SL-PD6 . When editing to another digital audio format, to make your own "greatest hits" collection, for example, this optical link ensures a pure signal transfer devoid of electrical noise. With Panasonic's "Play One, Change Four" design, users can replace any disc, except the one that's playing.