The way that VLC handles saving settings is obscure. Yet I did manage to find help.
By using this sequence of seven steps:
http://www.stufinnis.co.uk/vlcequalizersave.html
... I was able to save my dynamaic Range Compression settings but failed to enter the values for parametric volume levels to save and exit..
What is the correct syntax to enter parametric volume level numerically at the screen found at:
vlc> preferences > show all> audio > equalizer>
At the Equalizer With 10 Bands Screen.
Simple spacing did not give a good SAVE. Or made I an error in it.