The DPA 2011A Twin Diaphragm Cardioid Microphone is part of the Reference Standard Series and is built around the the acclaimed DPA 4011 cardioid microphone, due to it's its all-round capture abilities. The 2011A delivers a blend of clarity, richness and dynamic range. Great for miking and recording on stage and in studio. The 2011A from DPA features a Twin Diaphragm Capsule technology. In a 2011 capsule two opposite facing miniature capsules are custom re-built into a double diaphragm, one-capsule composition. The capsules are loaded to the supreme Reference Standard preamps instead of the tiny miniature FET preamp from the miniature mics, offering even more air and precision. In a 2011 capsule two opposite facing miniature capsules are custom re-built into a double diaphragm, one-capsule composition. The main features of the DPA 2011A include: Directional pattern: Cardioid Principle of operation: Pressure gradient, with interference tube Cartridge type: Pre-polarized condenser, Twin Diaphragm Capsule Frequency range: 20 Hz to 20 kHz Frequency range, ± 2 dB, at 30 cm: 50 Hz to 17 kHz with 3 dB soft boost at 12 kHz Sensitivity, nominal, ± 2 dB at 1 kHz: 10 mV/Pa; -40 dB re. 1 V/Pa Equivalent noise level, A-weighted: Typ. 20 dB(A) re. 20 µPa (max. 23 dB(A)) Equivalent noise level, ITU-R BS.468-4: Typ. 33 dB (max. 36 dB) S/N ratio (A-weighted), re. 1 kHz at 1 Pa (94 dB SPL): Typ. 74 dB(A) Total Harmonic Distortion (THD) at 1 kHz: < 1 % up to 137 dB SPL peak Minimum load impedance: 2 kohm Dynamic range: Typ. 117 dB Max. SPL, peak before clipping: 153 dB Switchable attenuator: 0 dB / -20 dB Output impedance: < 200 ohm Cable drive capability: 100 m (328 ft) Output balance principle: Impedance balancing with Active Drive Common Mode Rejection Ratio (CMRR): > 60 dB Power supply (for full specifications): 48 V Phantom power (± 4 V) Current consumption: 2.8 mA Connector : XLR-3M. Pin 1: shield, Pin 2: signal + phase, Pin 3: - phase Color: Matte black Microphone weight: 164 g (5.8 oz) Microphone diameter: 19 mm (0.75 in) Microphone length: 198 mm (7.8 in) Output voltage, RMS: > 5 V Polarity: +V at Pin 2 for positive sound pressure Temperature range: -40 °C to 45 °C (-40 °F to 113 °F) Relative Humidity (RH): Up to 90%