Inclusion Criteria:  Having sensorineural hearing loss. Indication for hearing aid treatment (hearing thresholds exceeding 20 dB (decibel) at two or more frequencies.). Symmetric hearing loss with a maximum PTA (mean of 0.5-1-2-4kHz) difference between the ears of 15 dB. No evidence of hearing loss fluctuation over the past 12 months. Danish native speaker. Access and user of e-Boks (e-Boks is a Danish online postal system, which ensures secure communication.).  Exclusion Criteria:  Medical or psychological conditions that would contraindicate audiological rehabilitation. Air conduction thresholds greater than 100 dB or no-responses on 3 or more high-frequencies (≥ 2000 Hz). Central auditory nervous system disorder. On any medication with ototoxicity potential. Unwillingness or inability of the subject to comply with study requirements.