This cohort of experienced Lyric patients are required to meet the candidacy criteria to be eligible for the self-replacement procedure. They will also be required to demonstrate proficiency with the self-replacement procedure before proceeding with independent self-replacement.

The self-replacement procedure is an experimental procedure in which the Lyric user replaces the Lyric devices independently at every other device replacement, using dedicated candidacy, training, and management procedures, conducted by and at the discretion of his/her hearing care provider (HCP).

Aided audiometric test measures: threshold testing. Thresholds will be measured in decibels Hearing Level (dBHL), with a range of -10 - 120 dBHL. Lower scores indicate better performance. Change in scores will be assessed between standard and experimental replacement procedures.

Aided audiometric test measures: speech-in-noise testing. Scores will be measured using signal-to-noise ratio loss, with scores ranging from 0 - 25.5. Lower scores indicate better performance. Change in scores will be assessed between standard and experimental replacement procedures.

Evaluation of incidence of medical referral secondary to device replacement, as determined necessary by the hearing care professional, and compared between the standard and experimental device replacement procedures

Evaluation of incidence of provider/clinical support needed between device replacements, as recorded by study staff, and compared between time periods associated with the standard and experimental device replacement procedures