I've had my amp since 2005 and preamp since 2006 both custom tubed pieces from Deja Vu Audio. Recapped the amp about 5 years ago and it sounds better than ever I don't see replacing either anytime soon.
Your Forever Pieces? What and Why?
Pretty sure a number of members have some equipment they have owned forever or intend to where feasible.
Curious as to what, how long so far and why?
Curious as to what, how long so far and why?