Released in 1983, Mister Disc, by Audio-Technica, was one of the first “portable stereo phono systems”. Click here for more pictures.
It was powered by internal batteries or AC power. Unfortunately it could not be used while moving and had to be kept on a flat surface for playback. Though it may sound like a dud but 24 years back in 1983 it would have been the coolest thing after the Walkman that is
[via Newlaunches]