I remember seeing the first techniques CD player SL1200 which had pitch control in about 1985. A few years before at a Hi-Fi show, they gave a demo on the digital recording where the digital information was stored on videotape. Absolutely no hiss, rumble, no pops, or clicks. At that time I did even have 1200s yet. In 1989 Denon released their first dual CD player at the New Music Seminar in NYC. One set controls for both sides you had to select 1 or 2. What hell were they thinking? CDs were being handed out as well as cassettes. I seriously didn’t think the Denon reps were going to make it out alive with the blowback from the CDs and the Denon player. A few years later I started the Transition CDs with portable CD players then Numark 5020 dual CD player. Which had to be the worst CD player no Instant start.