I remember back in the early 80's when I was about 12 the shopping mall boom started and there were several large electronic stores where you could play with M70's, M90's, GE's, Panny's, etc. There were so many to choose from. Kids in my neighborhood carried there boxes the way kids carry ipods today...everybody had one. The park in my neighborhood was the spot for many boombox battles and you would see small, medium, and large boxes going at it!! The most popular box to have was the M70 but it was very expensive, but it could be found at all the electronic stores and that exposure, along with its great performance, had a lot to do with it's popularity...and those pretty blue speaker gave it a unique look compared to all the other silver boomboxes.