If you hopped into your time machine and brought back audio gear- what would it be?


So you have a time machine and you could go back to the days when you first started to get interested in and knowledgable of good audio gear- and a genie grants you one audio wish- you can bring back any single component from those halcyon days- what are you coming back with? 
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Proper Disco ball with accompanying lights and one more ball with lights built in.

They don't build them like they used to.
I’d go way back for a brand new top of the line Gramophone  to bring back with me.  Like the one Quentin Collins used to listen to. 
...go a little further back and kidnap Nipper, the RCA dog...

For extra Reality Distortion points, take him back with some Bluetooth ear buds and a SOTA player....

(Warm up the Tardis....)
To all interested: A "Genie" is a brand of electric garage door openers.
You have a garage door opener that grants wishes?