Sub-Miniature Omni-Directional Lavalier Microphone

The Sony ECM-90 Electret Condenser Microphone is an ultra-compact, dual-diaphragm omnidirectional microphone capsule.

The ECM-90 has a flat-and-wide frequency response of 20 Hz to 20 kHz, a dual-diaphragm mechanism that reduces the cable noise and a splash-proof design built to withstand every-day use.

The ECM-90 is available with two different connectors

ECM-90BC comes with a Sony 4-pin (SMC9-4P) connector

ECM-90LM comes with a 3-pin Lemo connector


Capsule Type Electret Condenser
Frequency Response20 Hz to 20 kHz
Directivity Omni-directional
Sensitivity *[1] BC Type. -38 dB (12.6mV) LM Type. 40 dB (10mV)
Output Impedance *[2]BV Type. 2.5 kΩ (unbalanced)
LM Type. 6.3 kΩ (unbalanced)
Dynamic Range (typ.)99 dB
Signal-to-Noise Ratio (typ.) *[3]68 dB
Inherent Noise (typ.) *[4 26 dB SPL
Wind Noise *[5]45 dB SPL or less (with supplied windscreen)
Maximum Input Sound Pressure Level (typ.) *[6] 125 dB SPL
ConnectorBC type. Supplied with Sony 4-pin (SMC9-4P) connector
LM Type. 3-pin Lemo connector
Mic Cable BC Type. 3.9 feet/1.2 m
LM Type. 5.2 feet 1.6m
Power RequirementsBC Type. DC 1.1 V to 10.0 V
LM Type. Supplied from Sony wireless system transmitters
Dimensions *[7]5/32 x 5/32 x 21/26 inches (Mic head) 3.5 x 3.5 x 20.5 mm (Mic head)
Mass (microphone body, excluding cable)Approx. 0.035oz Approx. 1g
Supplied AccessoriesUrethane type windscreen (1)
Single/vertical type tie clip (1)
Single/horisontal type tie clip (1)
Operating instructions (1)
Optional AccessoriesWind screen pack
Vertical clip pack
Safety clip pack
Horizontal clip pack
Double clip pack
Color windscreen pack
Black windscreen pack
Accessory kit

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