WHY BILATERAL (BOTH EARS )HEARING AIDS IS IMPORTANT if you have hearing loss in both the ears, two hearing aids may be recommended, some people going with one hearing due to cost limits, but the truth is that one hearing aid simply cannot do the job of two. two hearing aid give your brain the information that needs., provide a full listening experience , Mask ringing senstion in the ears (tinnitus), Provide more relaxed listening , Provide help you detect sound direction , provide / contribute to better speech discrimination, reduce the need for high volume , Help to seperate voice for noise.