N@Z 0 Report post Posted November 18, 2003 An interesting detailed look into the inner workings of the etymotics er4 series canal phones courtesy of HeadWize I've always wondered how tiny the drivers were & how it can produce such amazing sound quality. Share this post Link to post Share on other sites
Blues 0 Report post Posted November 19, 2003 fantastic small little phone Share this post Link to post Share on other sites
