Product Code: 1632596

Sony ECM-77BPT Electret Condenser Miniature Lavalier Microphone

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The Sony ECM-77BPT is a miniature omni-directional lavalier microphone designed for professional broadcast, sound reinforcement, and recording applications. The condenser element has a miniature profile, allowing it to be easily concealed in performance and broadcast situations. Its omni-directional pick-up pattern provides even frequency and sensitivity response.

Key Features: Sony ECM-77BPT Electret Condenser Miniature Lavalier Microphone

  • Hands-free sound solution
  • Probably the most seen microphone on TV
  • Omni-directional pattern provides even sensitivity and frequency response
  • Powered with a single AA alkaline battery or external 48 V phantom power
  • Unobtrusive profile enables easy concealment in broadcast and performance situations
  • Supplied with pre-solder bare wire ends


  • Capsule Type: Electret condenser
  • Frequency Response: 40 Hz to 20 kHz
  • Directivity: Omni-directional
  • Sensitivity *(1): -39.0 dB (11.2 mV)
  • Output Impedance *(2): 2.5kO±30%, unbalanced
  • Dynamic Range: 90 dB or more
  • Signal-to-Noise Ratio *(3): 64 dB or more
  • Inherent Noise *(4): 30 dB SPL or less
  • Induction Noise From External Magnetic Field *(5): 5 dB SPL or less
  • Wind Noise *(6): 40 dB SPL (with windscreen)
  • Maximum Input Sound Pressure Level *(7): 120 dB SPL
  • Connector: Pre-solder bare wire ends
  • Mic Cable: 1.2 m (3.9 feet)
  • Power Requirements: DC 1.1 V to 10.0 V
  • Power consumption: 0.4 mA or less
  • Dimensions *(8): 5.6 x 12.5 mm (f0.25 x 0.5”)
  • Weight: Approx. 25.5n g (0.9 oz)
  • Supplied Accessories:
    • Single/horizontal type tie clip (1)
    • Metal-mesh type windscreen (1)

*(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.)
*(8) The values for dimensions are approximate

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Product Specification

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Product Code: 1632596-wex Manufacturers Part Number: ECM-77BPT