Shure SM81 Small-diaphragm Condenser Microphone
Microphone Type: Condenser
Polar Pattern: Cardioid
Frequency Response: 20Hz-20kHz
Max SPL: 136dB (146dB w/Pad)
Output Impedance: 150 ohms
Signal to Noise Ratio: 78dB
Self Noise: 16dB (A weighted)
Low Cut Filter: 80Hz (-18dB/octave), 100Hz (-6dB/octave)
Pads: -10dB
Connector: XLR
Manufacturer Part Number: SM81-LC