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Earthworks SR40

40kHz Multi-Use Cardioid Condenser Microphone

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You’ll love what the Earthworks SR40 high-definition cardioid mic does for your recordings and live performances. Its 30Hz-40kHz frequency response means you’re capturing a far wider range than most mics can touch. The result? Better depth and a truer sound that includes more high-frequency overtone content. You’ll also appreciate how well the SR40’s true cardioid pickup pattern rejects outside sources, and how it gives you impressive gain before feedback.

Extended frequency response to 40kHz
Multi-purpose directional microphone
More gain before feedback than other microphones
Less leakage
Textbook perfect cardioid polar pattern with natural on- and off-axis performance
Provides excellent results for both live performance and recording applications
Extreme accuracy in the time domain for faithful reproduction and no smearing or distortion
Transparent sound quality
Shorter diaphragm settling time to prevent quieter attacks from being blurred by earlier louder attacks
30Hz – 40kHz frequency response, revealing subtleties in the sound that are non-existent from microphones with less high frequency range, and enabling musical performances to exhibit greater depth and realism
The exceptional rear rejection performance enables the SR40 to easily isolate instruments in a recording or live performance setting, thus minimizing acoustic bleed


Frequency Response 30Hz – 40kHz ±2dB at 6 inches (15cm)
Polar Pattern Cardioid or Hypercardioid
Sensitivity 10mV/Pa (-40dBV/Pa)
Power Requirements 48V Phantom, 10mA
Max Acoustic Input 145dB SPL
Output Male XLR-3 balanced (pin 2+)
Output Impedance 100Ω, balanced (50Ω ea. pin 2 & 3)
Min Output Load 600Ω between pins 2 & 3
Noise 22dB SPL equivalent (A weighted)
Dimensions L x D 250mm x x 22mm (9.84 x .860 inches)
Weight .5 lb (225g)

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