The purpose of the study is to follow-up on a released low-risk device as part of standard PMCF activities.

This is a comparative study which is conducted monocentric at Hoerzentrum Oldenburg, Germany. The focus is to test a released hearing aid and compare this to the subject's own hearing aids with a minimum of 18 adult subjects with mild-to-moderate sensorineural hearing impairement. The subjects, all native German speakers, have 1 appointment of 1-2 hours including a fitting procedure with real-ear measurements and selected standard speech tests and tests of basic hearing-aid related task.

Inclusion Criteria:

• Sensorineural hearing loss, mild-to-moderately severe (Pure tone average of 500, 1000, 2000 and 4000 Hz <65).
• Hearing loss should fall within fitting range of study hearing aid
• Subjects should be experienced hearing aid users who have had and used hearing aids daily for at least 1 year.
• Air-Bone-Gap should be less or equal to 20 dB.
• Asymmetry between left and right ear should not exceed 20dB for frequencies in the range of 250Hz to 4kHz
• Healthy (outer and middle) ear
• Older than 18 years
• German is mother tongue
• Able to understand the instructions
• Willing to participate in laboratory tests and to wear the study HAs at home for 2 weeks
• Informed consent

Exclusion Criteria:

• Contraindication for HA treatment
• Fluctuating or rapidly progressing hearing loss
• "Central" hearing problems
• Limited mobility
• Limited dexterity (in handling the HA)
• Known psychological or cognitive problems
• Subjects must not show any injuries or a complete perforation of the ear drum. This must be clarified prior to the beginning of the study by means of otoscopy.
• Subjects should be in good overall medical condition (e.g., they shall not suffer from dementia) and should not use medical treatments that might affect study results.