Mungo Jerry on their Mum's powder blue Fidelity portable
Because no teen could afford a real HiFi, in real terms about x2 the price of an HDTV today ... which reminds me, 1950s TV sets and radios have far better audio than HDTV or table top radio today. Laptop speakers in the 4K res 48" TV! Gah!
Most of the home cinema has like 1995 PC speakers in plastic boxes.
256K MP3 isn't bad and 320K OK, but less compatible. Only my laptop and Tablet will play AAC.
I only buy CDs, rip and archive. I use decent wooden cabinet speakers on TV, but very many films on DVD, BD have terrible sound balance. TV drama too has the music and effects too dominant.