The longest you have owned any gear?

PS Audio Lambda cd transport purchased new in 1993. Wonderfully musical. Great rhythm. Legendary.
I preferred it to my CEC that I purchased some years later and sold. https://www.stereophile.com/content/ps-audio-lambda-cd-transporthttp://

A luxman t110 tuner that I bought new in 1977. Since I no longer listen to fm radio at home, I sold it last week.

My Pioneer SX980 receiver from ~1979. It is still used in the laundry room.

In 1978 I bought a Pioneer rig with SPEC 1 & 4 and HPM-150 speakers. I sold it to my brother in 1984. In 2008 I got those speakers back, re-foamed LFs, paired them with old school Kenwood L-07 monos and pre, added a tube DAC and Squeeze Duet and now have a system for a grand that I am extremely happy with. Vintage sometimes gets a bad rap but my stuff works like a charm. 

I'm at 38 years with my first pair of speakers, Pioneer HPM 40's.