When did the Hi-Fi sound mature?


Just a random thought I always had: when did the hifi sound got close to the point where it is now? Given the system from end to end. I don't mean comparable to state of the art today, but comparable to say an average audiogon system. The 50's? 60's? 70's?
toufu
Thanks Al, good stuff. I had read somewhere that the early Mark Levinson JC-1 preamplifier (John Curl one?) was one of the first pieces to be acknowledged as challenging tubes for use in "high end" systems. One of the reasons Parasound raised eyebrows when they came out with a "JC-1" model amplifier (and JC-2 preamp) of their own not so long ago.
Al,

Nice post. It is always pleasant to see a balanced view that does not follow the heavily beaten path of simply pitting digital against analog or tubes against SS!
Yes, that's right. I believe that John Curl designed all of the JC-designated products for both MLAS and, in recent years, for Parasound.

Regards,
-- Al