Two hearing aids are recommended for a reason. The brain processes the ear signals from both ears for clarity and a more balanced sound. You will be able to hear much better with two hearing aids, and your satisfaction will be much greater. If you only use an auditory but have a hearing loss in both ears, the brain has to process 2 sounds and levels of clarity, which makes it more difficult to get a clear understanding of the sound signal. In addition, there is significant savings if you buy two hearing aids instead of buying one.