DPA 2011A, Modular Reference Standard Microphone, Pre-polarized double membrane, Polar pattern: Cardioid, Frequency range: 20 - 20,000 Hz, Dynamic range: 117 dB, 48V phantom power, Sensitivity nominal: 10 mV / Pa; -40 dB re. 1 V / Pa, Equivalent noise level, A-weighted: type. 20 dB (A) re. 20 µPa (max 23 dB