Once your hearing instrument specialists has performed all hearing tests necessary to have a thorough understanding of your hearing needs, you will then be ready for your hearing aid fitting. Hearing aid fittings are extensive and should be professionally fitted with an experienced hearing instrument specialist. Depending on the hearing aid required, there might be a need for a mold of your ear for a custom fit. The beginning of the next step is extremely vital in ensuring your hearing aid works according to your specific needs. The hearing instrument specialist inserts a thin tub near your eardrum to measure the impact of loud and soft sounds within your eardrum, followed by the insertion of the hearing aid. Then the amplification will be balanced to achieve comfort with your hearing device.