GRAS 40AC 1/2 Inch Ext. Polarized Free-field Microphone, Wide Frequency
GRAS 40AC is a high-precision condenser microphone made according to IEC 61094-4 requirements. The 40AC’s design is based on the original reference 1/2" pressure microphone, but optimized for free-field measurements. This results in a doubling of the upper 3 dB frequency limit. All other parameters remain unchanged, making 40AC the perfect free-field complement to the original GRAS 40AG 1/2" Ext. Polarized Pressure Microphone.
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