The analog hearings, which have been around for many years, works on the simple theory of amplification. It takes a sound entering the unit’s microphone and makes it louder when it enters the ear canal. Realistically, it is not the difference between analog and digital hearing aids that make such a big difference as it the ability to adjust the digital signal being processed. For many, digital programmable hearing aids have allowed them to enjoy better hearing and a higher quality of life.