?
I dunno.
My main components are pretty old, but were pretty well reviewed back in the day. How's it sound compared to today's finer SS amps/preamps? Probably holds it's own without embarrassing itself.
Works fine for me.
Now, if you compared that to a system with Dan D'Agostino amplification and a DCS source, I would expect it to get smoked, but since I don't have that....I'm cool with calling it a "reference system".
I can hear a difference when I change a source, a cable, a plug, whatever, so....good enough for me.