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...
What’s in your system today that you also had 10 years ago?
For me, it’s only my turntable, an LP 12, though I did have a Kore installed in 2015 so it’s not quite what it was 10 years back.