Clinical Investigation of New CI Delivery Models in an Adult Nucleus CI Population

Inclusion Criteria: Newly implanted and existing recipient Groups (Groups 1 and 2): * Age 12 and older * Monosyllabic word score administered at 60dBA (2 lists) with an appropriately fit hearing aid in the ear to be implanted who are receiving a cochlear implant as standard of care * Group 2: 3 months or greater combined experience with commercially available sound processors * Fluent spoken English skills Exclusion Criteria: * Unrealistic expectations on the part of the subject regarding the possible benefits, risks, and limitations * Additional cognitive, medical or social handicaps that would prevent completion of all study requirements as determined by the Investigational team * Unwillingness or inability of the subject to comply with all investigational requirements * Use of an acoustic component in the implanted ear * Less than 18 active electrodes * Hybrid L Cochlear Implant