Your oldest gear?

Thiel CS 2 2 oldest

ZeeCenter by MIT power conditioner longest owned

Oldest piece I own are a pair of McIntosh MC30s from the 60s. The piece I've opened the longest and bought myself is a Pioneer receiver from 1997...

Hello and greetings to everyone, I inherited from my dear father a Technics SL-1400 turntable which I remember that he purchased in 1976 and it still works quite well that I play in my system.  And a pair of JBL L110 speakers that are in my basement patiently waiting to have the woofers re-coned. And from my dear father in-law a pair on Infinity RS IIb speakers that are also playing brilliantly in my system. 

My Trio W-41 integrated tube amp is 62 years old. I refurbished it 6 years ago. 

My ears are 4 years younger.

Oracle Delphi mkiii, 1987. Owned longest, a pair of Monarchy SM70's. Owned for 30 years, I think. Both operating in my current system.