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? 
128x128zavato
Absolutely nothing. There are romantic memories but I am happy leaving them as they are. Electronics in particular are built so much better than they were back then. The switches and pots in my Marantz 7C preamp would be called garbage today. It is more fun to talk about my mistakes.
Question-
Is the time machine the backup for the genie, or is the genie the backup for the time machine?

A 1957 Olympic Stereo Console my parents had in the living room where I first discovered music I loved.