NAL-NL2 is the most popular and widely recognised fitting algorithms available (compatible with Windows or mobile apps)


NAL-NL2 is the second generation of prescription procedures from NAL for fitting wide dynamic range compression instruments. Like its predecessor NAL-NL1, NAL-NL2 aims at making speech intelligible and overall loudness comfortable. NAL-NL2 is the most widely used fitting prescription for hearing aids in the world.

For integration into your fitting software (compatible with Windows or mobile apps)

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