As the level of technology increases, hearing aids become more automatic and have more features to help you communicate in difficult listening situations. For example, instead of using two channels to separate sound for processing, a hearing aid with advanced technology may have eight or more channels. This splits the signal into even smaller frequency bands and therefore offers a higher resolution of signal processing.
In addition to the basic hearing aid technology, each major hearing aid manufacturer offers several levels of advanced digital technology. More advanced technologies translate to greater benefits.