Longest I've owned from the start- Technics SL 23 belt drive (still works for my daughter) I bought used in college in mid 70's.
Longest period is Eico tube gear my Dad built at the kitchen table in the 50's when I was a kid- He put speakers in the wall of our living room- no Sheetrock then- plaster & lath construction- came to me when he passed- still works we still enjoy it.
Longest period is Eico tube gear my Dad built at the kitchen table in the 50's when I was a kid- He put speakers in the wall of our living room- no Sheetrock then- plaster & lath construction- came to me when he passed- still works we still enjoy it.