Be is not available widely as its a scarce resource. There is only once company which can make Be foils and they are found in speakers which are more than $3000. Also most expensive speakers which claim to have Be speakers the Be content is less than 0.6%.
psychoacoustic Be placebo is a topic of research of the person who has written "The Whole Truth About Beryllium Diaphragms."
Because any beryllium synthesized in stars is short-lived, it is a relatively rare element in both the universe and in the crust of the Earth.
Edited by MuZo2 - 1/23/14 at 1:14am