What’s in your system today that you also had 10 years ago?

Musical Design D-150B amp....still powerful and musical !

well I'll see your 10 years and raise you twenty more. My Aragon 4004 power amp and 24k pre amp are still working just fine 30 years on....and though its currently on the second team my AR turntable is still turning...

My Pass X2.5 PreAmp & 250.5 Amp , B&W 802D’s and Quest power meters are still the heart of my system. Fixing/upgrading my Mitsuibishi LT-30 ( linear tracking) turntable to once again be part of the system.

KEF Calinda speakers that i purchased new in 1979. Used them in my main system until 2003. Moved them to a secondary system where I still regularly listen to them. I can listen to them for hours on end without any fatigue.

I guess almost everything......Ayre V1, Ayre K1 (with all the mods) Ayre C5xemp, VPI Superscoutmaster rim drive, Classic platter (new) 3D arm (new), 2nd pivot (new), Ortofon Winfield (newish), Vandersteen 5A speakers. ...and still making music.