A: Most individuals have hearing loss in both ears and will, therefore, have better results by using two hearing aids (binaural use). Studies have shown that binaural use improves understanding in noisy environments and the ability to localize sounds, among other benefits. However, in some cases, an individual does have hearing loss in only one ear. They might also have one ear that cannot benefit from a hearing aid because its loss is so significant. In these cases, a single hearing aid is recommended.