Not necessarily interesting or worth actively scouting for - but for one thing : this forgotten audio amplifier is still playing today, more than thirty-three years after its initial launch.
Unbelievable, isn't it ?
Most of yesterday's audio gear, high-end, low-end, mid-fi, low-fi, ultra-fi, if more or less well cared for, is still doing what it was meant to do and we can still play the x-rare LPs that never were nor will be reissued : put the vinyl on the twangy Thorens TD-125, thump up the VN-900, pump up the volume - memories, bliss, surprise : tongue, no tongue, your choice.
Now, transpose that situation into the blazing world of 2045.
First find a new battery for the old mp3 player your gran'pa gave you on your 12th birthday. Ok - no battery, but suppose you manage to power it up.
What the hell is the compression format the darn thing restricted music with ??
Nothing can play that anymore. And that plug (USB ?) - what is it ??
Unless you find an old Hell running the Window$ thing (was that the name ? it used to be huge company). Or maybe an old G5, the one with the Apple on it.
But where to find the proper OS that has the built-in codec ? And that's supposing you could have those machines running again...
Ah ! Bollocks !
Throw the mp3 player away.