This unit is the basic backbone of digital technology with basic bandwidth circuitry. It features two manual adjustment potentiometers that allow the user to control the base and treble tones and set them according to their own preference. This unit is an excellent low-end digital choice and is popular for active individuals who also maybe slightly of hard-of-hearing. 
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EAR Digital Basic is a fully digital programmable circuit. It features excellent low-end digital sound enhancements and is a popular unit for active, hard of hearing and competitive shooters. This unit features an increase to fidelity for slightly hard of hearing individuals, those using game calls and those needing to understand speech and environmental sounds. 
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EAR Digital Plus is a fully programmable circuit that features an increased bandwidth for better clarity through the entire frequency range. Excellent units for hard of hearing due to its higher sound enhancements and digital clarity...as well as shooters or those using calls, such as waterfowl hunters, or where verbal communications are required. 
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EAR Digital Multi-Memory provides the best enhancement and natural sound qualities available by todays state of the art technology. The first memory gives the user the ability to have natural enhancements without filtering. The second allows the user to eliminate distracting background sounds such as verbal conversations in a stand or wind noise. The third functions like an off feature. This is a fully programmable unit. 
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