Are they totally dated, meaning past their intended lifespan from an internal component perspective?
No. But my memories a little hazy. You should check. Like in the Bruce Willis movie RED. Made before expiration dates and you're okay.
I have to say it all still sounds really good to me.
See? Like Malkovich with the Twinkie.
But I never really listen to other systems.
Perfect. This is the key to happiness. Avoid internet, magazines, and stores. You'll be fine.