GRAS 43BA-1 1/4" 0.4cc High Frequency Coupler Kit

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The GRAS 43BA-1 is a high frequency ¼" 0.4cc coupler kit for test of  hearing aids at frequencies up to 16 kHz. It is a complete kit with a ¼" Pressure Microphone and a ¼" Preamplifier with LEMO connection and the same adapters known from the reference 2cc coupler.

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