CassetteFuturism

Apparently, they were pretty expensive when new.

https://blog.audiogon.com/2020/08/03/retro-tech-spotlight-conion-c-100f/

The suburbs may have seen the music players of choice — Sony Walkmen and other gizmos of that ilk — growing smaller and smaller, but in the cities, on the streets, size was king. And there was no music player bigger and badder than the Conion C-100F, an off-brand Japanese-made boombox that sold for $450 or so in 1985 (about $1,100 in 2020 money).