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

Mark Levinson 23.5 amp and Magnepan 3.5R's.

I lost them when I lost my self to alcohol and the breakup of a relationship.  I fear they ended up in a dumpster.  Also my Lexicon MC-4 at the time and a dedicated HT in my own home.

I've lost lives, but sobriety is something no one can take away from me.

My Kyocera DA-610cx CD player. Purchased new in 1986. It's never needed service. It doesn't balk at playing newer file types like MP3's, FLAC's, etc. burned to CD-R's. The sound is warm and not overly bright.

Garrard 401 TT w/Scheu Tacco arm and Dynavector Karat cart, driving JLTi MC phono pre (w/custom umbilical from the designer, RIP).

Probably my Totem Arro loudspeakers. Fantastic imaging, tone/timbre, and bass response especially for the size and price.  High Wife Acceptance Factor, too.  I still own them but am not using them now. They were a bit undersized for the room and for some complex arrangements (or high volumes). Oh, and the Wife Acceptance is no longer a Factor.

B&K 202+ power amp.Still have it but it needs repair.