A hearing aid system includes a first unit producing first perception and second auditory unit producing second perception. The units are configured to provide a first and second auditory perceptions respectively. The system also includes a first processor comprised within the first auditory unit and/or a second processor comprised within the second auditory unit and/or a remote processor comprised within a remote control that is configured to communicative couple with at least one of the first auditory unit and/or the second auditory unit. The at least one of the first processor, second processor or remote processor is configured to access, for a scenario, a stored related parameter value for a parameter from a memory, and process the accessed related parameter value such that an aligned auditory perception between the first auditory perception and the second auditory perception is obtained.