A little news I thought I'd share.
"Researchers at the University of California, Berkeley have created the first ever graphene audio speaker: an earphone. In its raw state, without any kind of optimization, the researchers show that graphene’s superior physical and electrical properties allow for an earphone with frequency response comparable to or better than a pair of commercial Sennheiser earphones..."
Research Abstract for the technical paper here: http://arxiv.org/abs/1303.2391
Best part about it: the graphene membranes were developed with a relatively simple (and presumably cost-effective) method. According to another source the researchers used a Senn MX-400 as their comparator.
**Heading of the post should read "Graphene Headphones - UC Berkeley"....my bad - B
Edited by BriX - 3/13/13 at 3:40pm