Evaluation of Cochlear Baha 5 SuperPower Sound Processor on the Baha Attract System

Inclusion Criteria: * Adult subjects ≥ 18 years of age * Mixed hearing loss in the ear to be implanted. Bone conduction thresholds with pure tone average (PTA4, Mean of 0.5, 1, 2 and 4kHz) of 30-55 dBHL or * Single-sided sensorineural deafness: Bone conduction thresholds with a pure tone average \[PTA4, Mean of 0.5, 1, 2 and 4 kHz\] of lower or 30 dBHL in the best ear. Subjects who have, for some reason, experienced no or limited benefit from other sound processors when tested on a Baha Softband. * Subjects suitable for surgery according to the recommended surgical procedure for Cochlear Baha 5 SuperPower with no previous implant on the side to be investigated. * Signed inform consent. Exclusion Criteria: * Subject scheduled for simultaneous bilateral implant surgery. The investigation is limited to subjects with unilateral use of the Investigational device (however, bilateral hearing loss is not an exclusion criterion). * Suitable implant position for the BI300 Implant (4 mm or 3 mm) not found during surgery due to insufficient bone quality and/or bone thickness * Less than 3 mm soft tissue thickness at the planned implant site. (Intra-operative exclusion criteria judged by the surgeon at Visit 1 or Visit 2 according to local practice). * Subjects that have received radiation therapy at the same side of the skull where the Investigational device will be positioned. * Uncontrolled diabetes as judged by the investigator. * Condition that could jeopardise osseointegration an…