mahgister, I'd bet that when we owned and enjoyed what is now 'vintage' (and most of us now having become 'vintage' as well), the means and methods to attain that true potential was unattainable or unaffordable.
Vintage myself …. :)
You are right, when i takes out of the box my Vintage Sansui i was not thrilled nor so impressed....
But when after some years I have learn how to embed it in my room, the difference was night and day...
I know first hand that, never mind the electronic components, the key is how to implemented it in the 3 dimensional embeddings: mechanical, electrical, and more important acoustical....
That is my point...
The other point is vintage top of the world engineering of the past is enough good today, if rightly embed, to beat more evolved engineering, not so rightly embedded….
My best to you and thanks for your humorous and friendly posts....