Hamish - You are correct!
After all my retro camera gazing, I figured I'd dig-out this old classic from... wait for it...
1979!
Almost impossible to believe that it's that old - Just think about it, people were driving around in cars like the Granada, Escort, Mini and Allegro, when the car workers weren't on strike...
Alien and Superman were showing at the local Roxy, and Pink Floyd were touring with 'The Wall'.
Disco was making a showing with Gloria Gaynor "I will Survive", and Are You Being Served and The Old Grey Whistle Test were on the BBC.
CD was still years away, and most people still bought their music on record.
Into that world dropped the original Sony Walkman, the TPS-L2.
Designed to give the head of Sony something to listen to opera with on long flights, the original Walkman was actually a cannibalized journalists tape recorder (The TCM-600), with the speaker and recording circuits removed, and a stereo playback head and headphones added.
This was a true first - no-one had produced a stereo portable music player before (although Sony had stolen the concept from a lone designer who later sued them for millions - and won).
It sold for £100, which was a lot of money in 1979 - the average UK house price was £13,650.
The original batch didn't even have the name 'Walkman' - Sony were thinking of calling it the Soundabout or Stowaway, but settled on Walkman as sales took off.
I remember seeing a magazine advert for the Walkman, and thinking it would be a great birthday present from the old dears
My local hi-fi shop got one in, and had it on display in the window - I passed it every day on the way to and from school!
I went to work on my parents, and knew I'd been successful when one night, after I was supposed to be asleep, I heard the now familiar sound of music from someone else's headphones, and my dad shouting to my mum that '
This thing is really good'
What a machine! - actually very reminiscent of some of the vintage cameras I've been photographing. It had a metal case, and a blue leather holster which could attach it to your belt.
All of the buttons were cast/milled metal, and the mechanism gave a nice heavy clunk as you operated the controls.
You adjusted the volume for left and right separately, with very techie looking mini-slider controls.
You could plug in two sets of headphones, so you and your significant other/friend could both listen to
Genesis Duke at the same time!
Not only that, but you could press the orange 'Hot Line' button - which would lower the volume of the music, and allow you to talk to each other via the built in Mic.
This feature was also useful when crossing the road with headphones on - as you could listen for traffic.
It was a whole new world of portable audio
The Hot Line was dropped on subsequent models - I guess it cost too much to keep in
Playback quality was good (for cassette), although you had to keep the capstan shaft and heads clean with 'tape head cleaning fluid' as tapes at that time shed oxide like there was no tomorrow!
It did of course spawn thousands of copies over the years, before being killed by digital music after CD, DAT, MD and MP3 took over the mobile music market.