The Audio2000'S® ACM137I is a miniature omni-directional condenser lavalier microphone specifically designed to meet the needs of professional broadcast and sound reinforcement applications.

The ACM137I condenser lavalier microphone features a micro-miniature construction for unobtrusive vocal pick-up. Furthermore, a high quality back-electret condenser microphone element provides the ACM137I lavalier condenser microphone with excellent sensitivity and extremely wide frequency responses.

A tie-clip is provided to have the ACM137I clipped to any article and set at any appropriate position. As a result, the ACM137I condenser microphone is a versatile, user-friendly, convenient, and reliable general purpose lavalier condenser microphone.


  • Type: Omni-Directional
  • Polar Pattern: Hyper-Cardioid
  • Sensitivity: -68dB @1KHz (0dB = 1V/0.1Pa)
  • Ouptput Impedance: 400 Ohms, Balanced
  • Frequency Response: 50 - 18,000 Hz
  • Power Supply: External Phantom Power