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

...garage....?  Oh, you mean the docking bay for the electric vehicle....

You 'previous era types' have such strange customs....
This worship of glowing glass tubes, heavy amplification devices, fragile plastic grooved discs, and the like make going to the VR museums a nostalgic giggle....People come 'back Now' just to verify that sort of thing really did occur...

...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....)