Behind-the-ear (BTE) hearing aids are the other main type of hearing aids. These instruments differentiate from the in-the-ear instruments because they rest behind the ear and are connected to a custom earmold or tip by a thin tube. This model is used in mild to profound hearing loss. Its larger size permits the use of larger mechanisms, which provide more power and features. It is more versatile and provides greater amplification than any other device. The only negative aspect is that it can easily be seen. This is no problem for most women (or men) with long hair who can easily hide it.