Like a fingerprint, each person’s hearing is unique. However, most hearing aids pick up the sound on the ear, which often does not benefit the sound. In particular, it affects the localization of sounds. With the ReSound ONE ™ with M & RIE (Microphone and Receiver-in-the-ear) this changes completely. With this new class of hearing aids, with the microphone and receiver / speaker in the ear, users take advantage of the action of the pinna to pick up the signal. Just as nature intended. That makes the Resound ONE unique as a hearing aid.