Shure SM7dB Dynamic Cardioid Vocal Microphone with Built-in Active Preamp

Type: Dynamic (moving coil)
Polar Pattern: Cardioid
Frequency Response: 50 Hz to 20 kHz
Output Impedance
150 Ω in Bypass Mode
27 Ω in Preamp Mode
Sensitivity (at 1 kHz, open circuit voltage) [1] 1 Pa=94 dB SPL
-59 dBV/Pa[1] (1.12 mV) Flat Response Bypass Mode
-41 dBV/Pa[1] (1.12 mV) Flat Response +18 Preamp Mode
-31 dBV/Pa[1] (1.12 mV) Flat Response +28 Preamp Mode
Polarity (relative to Pin 3): Positive pressure on diaphragm produces positive voltage on Pin 2
Net Weight: 1.875 lbs
Housing: Black enamel aluminum and steel case with black foam windscreen