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Omnidirectional electret condenser, ultra-mini 3.5mm size, 20Hz"20kHz response, 125dB SPL max, low noise, 3.9ft cable, shielded for digital wireless.



The Sony ECM-90BC is an ultra-miniature, omni-directional electret condenser lavalier microphone engineered for demanding audio applications such as ENG (Electronic News Gathering), studio work, EFP (Electronic Field Production), and location sound. Its dual-diaphragm design boosts sensitivity, widens the dynamic range, and significantly lowers self-noise. The microphone's advanced diaphragm mounting structure is crafted to minimize handling and cable noise-making it especially suited for mobile setups where movement is constant.

This model is praised for its natural sound reproduction, achieved through a flat and wide frequency response of 20 Hz to 20 kHz. Its water-resistant construction ensures it performs reliably in various environments, from studio interiors to unpredictable outdoor conditions. Additionally, the ECM-90BC is shielded for compatibility with digital wireless transmitters, making it a flexible and robust solution for professional broadcast and film production scenarios.

Despite its technical prowess, the ECM-90BC remains incredibly discreet. Measuring just 3.5 x 3.5 x 20.5 mm and weighing only about 1 gram, it can be easily hidden in costumes or attached subtly to clothing, perfect for visual media where microphone visibility must be minimized. It connects via a Sony 4-pin (SMC9-4P) connector and operates with a DC input of 1.1V to 10.0V, making it compatible with a variety of professional wireless systems. The package includes essential accessories like a windscreen and tie clips to facilitate immediate use across different setups.
  • Ultra-miniature lavalier microphone designed for high-end use in ENG, studio, EFP, and location sound
  • Omni-directional pickup pattern captures natural sound from all directions
  • Dual-diaphragm design provides high sensitivity, wide dynamic range, and low noise
  • Special diaphragm mounting reduces cable noise often found in lavalier setups
  • Flat and wide frequency response from 20 Hz to 20 kHz ensures accurate audio reproduction
  • Water-resistant build delivers clear sound in various conditions
  • Shielded for compatibility with digital wireless transmitters
  • Lightweight and compact with a 3.9-foot cable and 4-pin Sony connector
  • Operates on DC power between 1.1V and 10.0V
  • Comes with windscreen, vertical and horizontal tie clips, and operating instructions
  • General Specifications
  • Model: Sony ECM-90BC
  • Microphone Type: Electret condenser
  • Polar Pattern: Omni-directional
  • Application: Lavalier microphone for ENG, studio, EFP, and location sound
  • Shielding: Designed for use with digital wireless transmitters
  • Water Resistant: Yes
  • Dimensions Mic Head: 3.5 x 3.5 x 20.5 mm
  • Weight Mic Only: 1 gram

  • Audio Specifications
  • Frequency Response: 20 Hz to 20 kHz
  • Sensitivity: -38 dB or 12.6 mV
  • Output Impedance: 2.5 kiloohms, unbalanced
  • Dynamic Range: 99 dB
  • Signal to Noise Ratio: 68 dB (A-weighted)
  • Inherent Noise: 26 dB SPL
  • Wind Noise with Windscreen: 45 dB SPL or less
  • Max Input SPL: 125 dB SPL

  • Connectivity
  • Connector Type: Sony 4-pin SMC9-4P
  • Cable Length: 1.2 meters

  • Power Requirements
  • Voltage Range: DC 1.1 V to 10.0 V

  • Included Accessories
  • Windscreen (Urethane type)
  • Vertical tie clip
  • Horizontal tie clip
  • Operating instructions

  • Optional Accessories
  • Wind 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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