We had the small yellow waterproof, sony sport model.[1]

I think one even had a record player.

At some point loud portable stereos migrated into cars.

Now we just transmit audio to portable battery powered bluetooth speakers

images:

Sony sport boombox https://www.flickr.com/photos/55910525@N07/16532295849

google image search https://www.google.com/search?q=boombox+80s&source=lnms&tbm=...

vector stock: https://www.vectorstock.com/royalty-free-vector/vintage-cass...