Distinguished SOTW Coffee Guru
Yes it is “ paint "( I don’t know what you mean by paint or varnish, varnish is transparent and paint is not both are coatings ) or maybe better defined as black lacquer over brass.can you tell me if the selmer action 2 from the 1991 series is painted black or if it's varnish? and what changes in the black sound?
It may wear out , Selmer used to make a wide range of color lacquers (white, pink, blue, red ) and there are several example as what happens to it in time.
The sound thing is nonsense, even the claim of high frequency, do you seriously think that paint OUTSIDE the horn may do anything at all, and as always, realize that you hold the saxophone in your hand, put it in the mouth and hold it against your clothes .
EVEN IF sypathetic vibrations of a minute amplitude compared to the air column vibration had any effect they would be dampended by all these contact points?
Take a suspended church bell, hit it with a mallet, BONG! , now hold it with your hand and hit it again with a mallet... TAK! because the hand kills any vibration.
Take te same wooden mallet and hit , carefully, your saxophone, it sounds TAK or Thud , hold the bell with one hand, it still sound Tak or Thud.
players who play with their eyes (there are many) believe it matters . Once I met someone who thought that Silver plating (few microns thin) could be detected by “ touch” , she said that it is EVIDENTLY thicker than lacquer (NOT!)