What's the best and/or favorite piece of equipment you've owned? And do you still own it?

Teac X-7R reel to reel.  I no longer have it....if it would’ve been a car, it would’ve had 500,000 miles on it when it gave up the ghost.  Absolutely loved that machine, but it definitely belonged to another era, IMO.  I wouldn’t seek out another one now...

My Macs, C20, MC240, I've had a few. This pair though, they were made for each other Though I'm REALLY liking  the Cary V12r, I've been tinkin' with over the last year. This is out of 45-50 different power amps, and preamps

The speaker, I currently own. VMPS RMx Elixir. and a few that I've made
and kept , and or still working on..So there is 10-12 pairs, 3 pairs unfinished, CLOSE though...COLUMNS.... Everything else GOES.

I keep a cool 1/2 dozen to a dozen  Russco, QRKs, or Spartas, for TT project every now and then.. Garrards are too expensive. I like Thorens too 124...a little more reasonable.. FUN stuff. easy to work on, and sound good.

I lost a Fairchild 750 all dolled up.. I was pretty sore about that one.. I would have never sold it... Was stolen... I still cant figure how they loaded it up. 250 lbs..

Regards

Anything with copper....

Quartz....

Shungite....

:)

My dac Starting Point systems is irreplaceable soundwise and moneywise....I hope to own it till my death...

Oh yes MC, Joe Weber at Corner Audio. Spent lots of money there, Joe got me into high end audio.