Headphones and earphones for delivering audio; headphones and earphones for delivering personalized sound based the listener's hearing; home and car audio systems for delivering audio; home and car audio systems for delivering personalized sound based the listener's hearing; headphones with combined ear-cup and ear-bud design; computer software which uses the characteristics of the user's hearing to deliver personalized audio content based on that hearing profile

Audio mastering of recording based upon pre-ascertained hearing profile

Providing temporary access to non-downloadable software which uses the characteristics of the user's hearing to deliver personalized audio content based on that hearing profile; software as a service (SAAS) services featuring software for discerning a user's hearing profile used to alter audio content and personalize it for the listener's characteristics