ɐn ˈeɪtʃ fˈoːɹ pɹˈoʊfaɪl ɪz hˈɪɹɪŋ lˈɔs səfˈɪʃənt tə pɹɪklˈuːd sˈeɪf ænd ɪfˈɛktɪv pɚfˈoːɹməns ʌv dˈuːɾi, ɹᵻɡˈɑːɹdləs ʌv lˈɛvəl ʌv pjˈʊɹ tˈoʊn hˈɪɹɪŋ lˈɔs, ænd dᵻspˈaɪt jˈuːs ʌv hˈɪɹɪŋ ˈeɪdz.
An H-4 profile is hearing loss sufficient to preclude safe and effective performance of duty, regardless of level of pure tone hearing loss, and despite use of hearing aids.