The Shure SM86 is a unidirectional (cardioid) condenser vocal microphone for professional use in live performance. An extremely rugged microphone, the SM86 withstands the rigors of touring while delivering a clear, studio-quality sound. 
A cardioid pickup pattern isolates the main sound source while minimizing unwanted background noise. The built-in three-point shock mount minimizes handling noise, and a two-stage pop filter reduces wind and breath "pop" noise. 
SM86-LC:  Cable not included. Condenser cartridge for studio quality sound Tailored frequency response for a clear reproduction of vocals Rugged construction withstands the rigors of touring sound Cardioid polar pattern minimizes unwanted background noise Excellent choice for stage monitors and personal monitors Built-in three-point shock mount minimizes handling noise Two-stage "pop" filter reduces wind and breath noise Transducer Type Condenser (electret bias) Frequency Response 50 to 18,000 Hz  
Polar Pattern Cardioid Output Impedance 150 Ohms at 1 kHz Recommended minimum load impedance: 600 Ohms Sensitivity (at 1,000 Hz) Open Circuit Voltage: -50 dBV/Pa (3.15 mV) (1 Pa = 94 dB SPL) Output Clipping Level 1000 Ohm Load at 1,000 Hz: +3 dBV (1.41 V) Maximum SPL (at 1,000 Hz) 1000 ohm load (1% THD): 147 dB Self-Noise 23 dB typical, A-weighted Dynamic Range (1000 ohms) 124 dB (maximum SPL to A-weighted noise level Signal-to-Noise Ratio 71 dB at 94 dB SPL (IEC 651)* *S/N ratio is difference between 94 dB SPL and equivalent SPL of self-noise A-weighted. Polarity Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of the output connector. Power Phantom Supply Requirement: 11 to 52 Vdc, positive at both pins 2 and 3 Current Drain: 5.2 mA Connector Three-pin (XLR) professional audio Case Dark gray enamel-painted steel with matte-finished silver colored steel grille Dimensions See User Guide Net Weight Net: 278 grams (9.8 oz) Environmental Conditions Operating: -18 degrees to 60 degrees C (0 degrees to 135 degrees F) (relative humidity >90%) Storage: -29 degrees to 74 degrees C (-20 degrees to 165 degrees F) (relative humidity >80%)