This stereo set features two KM183 miniature condenser mics, two SG 21/17 stand mount swivels and two WNS 100 windscreens in an attractive wooden box.Packed with the same sophisticated electro-acoustic features found in higher-end Neumann microphones, these compact non-modular mics are nevertheless geared for serious production and home recording studios.The omnidirectional KM183 is a pressure transducer with a boost of approximately 7 dB at 10 kHz in the free field, and has a flat frequency response in the diffuse sound field. For more distant miking it offers a smooth increase in high-end response, ensuring a crisp sound. It offers the same balanced, phantom-powered output found in all Neumann microphones, and sports a nickel finish.Workaholics, consider yourselves warned. You might never run out of ideas for putting these versatile little gems to use. Acoustical Operating Principle: Pressure transducer _ Directional Pattern: Omnidirectional _ Frequency Range: 20 Hz … 20 kHz _ Sensitivity at 1 kHz into 1 kohm: 12 mV/Pa _ Rated Impedance: 50 ohms _ Rated Load Impedance: 1000 ohms _ Equivalent SPL CCIR 468-3: 24 dB _ Equivalent SPL DIN/IEC 651: 13 dB-A _ S/N Ratio CCIR 468-3: 70dB _ S/N Ratio DIN/IEC 651: 81 dB _ Maximum SPL for THD 0.5%: 140 dB _ Maximum Output Voltage: 10 dBu _ Dynamic Range of the Microphone Amplifier DIN/IEC 651: 124 dB _ Supply Voltage: 48 V 4 V _ Current Consumption 3.2 mA _ Matching Connectors: XLR 3F _ Weight (Each): Approx. 80 g (3 oz) Length (Each): 107 mm (4.2)