I didn't have a system 10 years ago, but I have a Musical Fidelity M1 DAC that's been with me since my very first system. It's totally out of its league in my current system, but I never cared much about digital and always ended up upgrading my analog rig instead of upgrading the DAC... And it's been like that forever.
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.