Levels of Hearing Aid Technology
Fully Digital Technology   Currently the Most Advanced Level of Hearing Aid Technology Superior Sound Quality Completely Automatic Fully Digital Signal Processing Between Microphone and Receiver Fully Digital Amplification Minimizes Hearing Aid Whistling Minimizes Cellular Telephone Interference 'Superior' Listening Comfort in Many Environments Processes Speech and Noise Differently Advanced Fitting Flexibility
	Digitally Programmable Analog Technology   Currently a Moderate Level of Hearing Aid Technology Good Sound Quality Fully Analog Signal Processing Fully Analog Amplification Digitally Programmed Only 'Good' Listening Comfort in Many Environments Advanced Fitting Flexibility
		Conventional Analog Technology   Currently the Most Basic Level of Hearing Aid Technology Good Sound Quality Fully Analog Signal Processing Fully Analog Amplification 'Good' Listening Comfort in Many Environments Limited Fitting Flexibility