The DPA ST2011C Compact Stereo Pair Twin Diaphragm Cardioid Microphones are part of the Reference Standard Series. Built around the acclaimed DPA 4011 cardioid microphone, the 2011C can be used for multiple applications, and to capture true stereo field. The ST2011C delivers a blend of clarity, richness and dynamic range. Great for close miking and recording on stage and in studio. Complete with Peli case, holders, and windscreens. The ST2011C 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 ST2011C include: Compact Stereo Pair with 2011A Cardioids 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%