Which aspect of hearing aids must be detailed according to the technical data regulations?

The aspect of hearing aids that must be detailed according to the technical data regulations is the average full-on gain. This is a key performance metric that indicates how much amplification the hearing aid provides under full-on settings, which is critical information for both users and healthcare professionals. It allows them to gauge the effectiveness of the device in improving hearing for individuals with varying degrees of hearing loss.

Providing accurate average full-on gain data helps ensure that the hearing aid meets the necessary standards for amplification prescribed by regulations and fulfills the users' needs effectively. This information assists audiologists in making informed decisions regarding the appropriate fit and settings for patients, ensuring compliance with safety and performance standards.

In contrast, while processor types, consumer satisfaction ratings, and packaging design details are relevant to the overall assessment of hearing aids, they do not have the same regulatory requirement for detailed disclosure in the technical data as the average full-on gain does.