Components of this hearing aid are housed in a small case that rests behind the ear. Sound is directed into the ear through a tube held in place with a custom shell, called an earmold, that fits into your ear. This hearing aid style allows for the greatest amount of amplification and is especially necessary for patients with severe or profound hearing loss. Often patients with limited physical dexterity appreciate the easier-to-manipulate size and durability of this style of hearing aid case. Due to growth, safety, and the likelihood of using an additional assistive listening device in school, this style is often recommended for children.