Wow. I used to have a blue one of these.
In 1983, an enterprising inventor came up with Mister Disc, the “personal portable phono system.” Considering that I, a major audio geek, had never heard of Mister Disc until 2006, I can only assume that it never caught on with the public. That’s not hard to understand. After all, who wanted to haul an armload of LPs or 45s with them wherever they went?
It was great to be able to share music w/ friends who didn’t have their own turntable. Sound quality was shitty, but it was a pretty pimp piece of gear back in the day.