that hearing juice in the future will also be marketted among audiophiles to increase sensitivity and form 'golden ear'.
Harvard U. article on hearing loss research
For those of you geeks who are very much interested in how we hear:
http://news.harvard.edu/gazette/story/2017/03/replacing-damaged-hair-cells-may-help-treat-hearing-lo...
http://news.harvard.edu/gazette/story/2017/03/replacing-damaged-hair-cells-may-help-treat-hearing-lo...