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A2B Microphone: Optimal Vehicle Communication

Featured Product from Ningbo Kepo Electronics Co., Ltd.

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Introducing the Kepo A2B Microphone, a pinnacle in vehicle communication technology. Adhering to GBT 14198-2012 and ITU-TP.1110 standards, our product undergoes stringent testing, including GBT12060.4-2012 Sound System Equipment assessments. Featuring omni-directional directivity, it operates at a sensitivity of -26±2dB with a remarkable delay of less than 50us.

Key Features:

  • A2B Method: Outstanding performance with less than 50us delay.
  • Protective Measures: Shockproof and windproof design ensures optimal performance.
  • Professional Spectrum Analysis: Detailed insights for enhanced functionality.
  • Collaborative Development: Jointly discuss acoustic simulation, hardware circuits, and algorithms.
  • Customized Design: Tailor-made solutions to meet specific requirements.
  • Automated Production: State-of-the-art fully automated production line with MES traceability.
  • Advanced Testing: Equipped with a professional anechoic chamber and testing equipment including B&K, KLIPPEL, and multiple acoustic testing systems.


  • Directivity: Omni-directional
  • Sensitivity: -26±2dB, 0dB=1V/Pa, 1KHz, 8V
  • Operation Voltage: 8±10% V.D.C
  • Max. Current Consumption: 25mA, at 8V
  • Max Input Sound Level: 120dB, at 1KHz, 8V
  • Distortion: <1.0% @94dBSPL@1KHz; <3% @106dBSPL@1KHz
  • Signal to Noise Ratio: >65dB, A-weighted

Applications: Perfect for automotive communication systems, the Kepo A2B Microphone guarantees crystal-clear audio, making it ideal for in-vehicle communication, hands-free calling, and other applications where high-quality sound and low delay are essential. Elevate your vehicle communication experience with Kepo's advanced technology.