tube condenser microphone

Polar Pattern:Uni-/Bi/Omni-directional
Frequency Response:20Hz-20kHz
Sensitivity:-36dB±2dB (0dB=1V/Pa at 1kHz)
Output Impedance:50O±30% (at 1kHz)
Load Impedance:=1000O
Equivalent Noise Level:12/13/14dB A
S/N Ratio:82/81/80 dB
Max. Input SPL:136dB (at 1kHz=1% T.H.D)
Electrial Current:3mA
Weight:635g
Dimensions:?60x59X210mm
tube condenser microphone