This stereo set features two KM184 miniature condenser microphones with a nickel finish, two SG 21/17 stand mount swivels and two WNS 100 windscreens in an attractive wooden box.The KM184 cardioid condenser mic is a great choice for overall studio use, especially for recording situations when it is necessary to attenuate off-axis sound (mainly from the rear) from other nearby instruments. Use it as stereo pairs, as overheads, as an announcer’s mic for broadcasting, for spot miking, and for close miking of strings, wind instruments, percussion, piano, guitar amps, and much more.The pressure gradient transducer features very smooth frequency responses not only for the 0 axis, but also for lateral (off-axis) sound incidence. In typical usage, there is no coloration of sound over a wide pickup angle. In the 0 frequency response the KM 184 has a gentle rise at about 9 kHz for a fresh lively tonal balance. Acoustical Operating Principle: Pressure transducer Directional Pattern: Cardioid Frequency Range: 20 Hz – 20 kHz Sensitivity at 1 kHz into 1 kohm: 15 mV/Pa Rated Impedance: 50 ohms Rated Load Impedance: 1000 ohms Equivalent SPL CCIR 468-3: 22 dB Equivalent SPL DIN/IEC 651: 13 dB-A S/N Ratio CCIR 468-3: 72dB S/N Ratio DIN/IEC 651: 81 dB Maximum SPL for THD 0.5%: 138 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)