SONY ECM-44B Omni-Directional Lavalier Electret Condenser Microphone


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Sony has produced over five million professional ECM (Electret Condenser Microphones) microphones and the ECM-44 is the affordable, general voice model. It provides good sound quality and is widely used in business presentation systems and TV production. The ECM-44 is available in four versions, featuring different connector types. This model, ECM-44B, is the XLR version with power barrel for use as a wired microphone.

Convenient to use
The ECM-44 is an affordable alternative to the traditional hand held microphone and being 'hands free' it allows the presenter to concentrate on her/his performance.

Professional image
Either 'in front of camera' or at a business presentation the ECM-44 creates a professional and tidy image.

Easy to use
It can often be difficult to achieve good quality voice pick-up but the ECM-44 can help get good results. The microphone's capsule is designed for general voice pick-up with a mid-frequency emphasis characteristic and a suitable frequency response.


  • Tuned for voice pick-up - The ECM-44's capsule features an emphasis curve and a suitable frequency response for voice pick-up.
  • Compact size - The capsule has a diameter of only 8.5mm and is 14.5mm long.
  • Ready for wired applications - The ECM-44B is the wired version with an XLR output and integral power supply barrel. This version can either be powered by an external microphone amp or internally by battery (LR6 or AA size). A single AA battery will provide several thousand hours of use.


    Audio Section
    Capsule Type: Electret Condenser
    Frequency Response: 40 Hz to 15kHz
    Directivity: Omni-directional
    Sensitivity *[1]: -53.0 dB ±3 dB
    Output Impedance *[2]: 250Ω±20%, Balanced
    Dynamic Range: 90 dB or more
    Signal-to-Noise Ratio *[3]: 62 dB or more
    Inherent Noise *[4]: 32 dB SPL or less
    Induction Noise From External Magnetic Field *[5]: 5 dB SPL or less
    Wind Noise *[6]: 40 dB SPL or less (with windscreen)
    Maximum Input Sound Pressure Level *[7]: 122 dB SPL
    General Section
    Connector: B type. Supplied with XLR-3-12C (male) connector in power supply unit (single AA size battery)
    Mic Cable: 9.8 feet, 3 m
    Power Requirements: Phamtom Power Not Supported, DC 1.5 V (AA size battery)
    Battery Operating Time: Approx. 6000 h (LR6)
    Power Consumption: 0.3 mA or less
    Dimensions *[8]: φ8.5 x 14.5 mm (Mic head), φ20.0 x 126 mm (Power unit XLR type), φ13/16 x 5 inches (Power unit XLR type), φ11/32 x 19/32 inches (Mic head)
    Mass: Approx. 4.3 oz (with power supply unit), Approx. 121 g (with power supply unit)
    Supplied Accessories: Urethane type windscreen (1), Single/horizontal type tie clip (1), Operating instructions (1), Mic case (1)
    Optional Accessories: Wind screen pack, Horizontal single-clip pack
    *[1] 0 dB = 1 V/Pa, at 1 kHz
    *[2] Output impedance at 1 kHz
    *[3] A-weighted, 1 kHz, 1 Pa.
    *[4] 0dB SPL = 20? Pa.
    *[5] dB SPL/1E-7 T, 0 dB SPL = 20? Pa.
    *[6] Wind noise at 2m/s (0 dB SPL = 20?Pa.)
    *[7] 0 dB SPL = 20? Pa.
    *[8] The values for dimensions are approximate.