Conventional hearing aids are the analog variety and are non-programmable. This means that they have one setting that cannot be changed or altered. With these models, you may experience sensitivity to background noise without the option to filter.best hearing aids Though many believe that these models are better than no hearing aid at all, with today’s advanced technology, other options are available. Leaps in technological advancement have increased the quality of life for many people with hearing loss. From digital hearing aids capable of retrieving a greater range of sounds to programmable hearing aids, the world is rapidly become a friendlier place for the hearing impaired.