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Highly consistent cardioid polar pattern
Champagne finish
Ultra-thin 2.5 micron 24 karat gold-layered low mass Mylar diaphragm for superior transient response
Class A discrete transformerless preamplifier for transparency extremely fast transient response no crossover distortion and minimal harmonic and intermodulation distortion
Premium electronic components including gold-plated internal and external connectors
Subsonic filter eliminates low frequency rumble (less than 17Hz) caused by mechanical vibration
Switchable 15 dB pad for handling extremely high sound pressure levels (SPLs)
3-position switchable pad (0dB 15dB and 25dB) for handling extremely high sound pressure levels (SPLs)
3-position switchable low-frequency filter reduces background noise and counteracts proximity effect
Extended frequency response
Exceptional reproduction of low-frequency sounds
Can withstand high sound pressure levels (SPL)
Superior common mode rejection and suppression of radio frequency interference
Includes foam windscreen and carry case

Diameter : 0.80 in 20mm
Impedance : 150 ohm
Sensitivity : -37 dBV
Phantom Power : 48Vdc Â±4Vdc (IECâ??268â??15/DIN 45 596) positive pins 2 and 3
Regulatory Compliance : CE EMC
Polarity : Positive pressure on diaphragm produces positive voltage on output pin 2 relative to pin 3
Common Mode Rejection : >/-50dB 20Hz to 20kHz
Current Drain : 4.65mA typical at 48Vdc
Attenuation Switch : 0dB 15dB or 25dB attenuation
Low Frequency Response Switch : Flat -6dB/octave below 115Hz -18dB/octave below 80Hz
Overall Length : 4.8 in 122mm
Maximum SPL (Sound Pressure Level) : 145 dB
Self Noise : 14 dB (typical equivalent SPL A-weighted IEC 651)
Product Weight : 0.10 kg
Minimum Frequency Response (Bandwidth) : 20 Hz
Minimum Frequency Response (Bandwidth) : 0.02 kHz
Maximum Frequency Response (Bandwidth) : 20000 Hz
Maximum Frequency Response (Bandwidth) : 20 kHz
Dynamic Range : 131 dB
Signal to Noise Ratio : 14 dB

Shure KSM137