This will all depend on your results as you may only have a problem in one ear, therefore you may only need one hearing aid. Aging and noise-related hearing loss usually affects both ears, however your hearing profile for each ear will be different, whether by a lot or only a small amount. If there is a loss in both ears, you are likely to benefit from a binaural (two aids) solution. Research has shown that roughly 70% of new users opt for dual hearing aids and as a group they report higher levels of satisfaction to their hearing loss, than to purchasers of a single aid.