My work is done!
I have now covered all aspects of HiFi, and leave my channel as a shrine so we don´t forget a lost era.
(watch in full HD and with a full screen to view the text more clearly)
I have covered everything on my channel and on my blog:
https://realhifihelp.wordpress.com/
The rest of the data is in my books, circa 2/3 of the information.