A life sentence!!!

My Velodyne SPL 1000 Sub. Bought it new in 2000 and have changed every component in my system several times in 25 years except that sub.

I can't pick just one coz I love my current main system.

McIntosh SACD/CD pre

PS Audio Stellar M1200 monoblocks

B&W 803 D3

Anticables interconnects and speaker cables

 Artisanal hand built custom rack

Primacoustic acoustic panels

My Dunlavy SC 3's. They are over the top. Sound as good now as they did 20 years ago.

If I had to pick one, my Dynaudio Heritage speakers are keepers.

@motown-l good call on the velodyne. I’ve had my CHT-8 since 2002 and it just keeps going and going.