Transducer Type
Back-electret electret condenser
Professional audio, microphones and system integration

The Harmonai CM-290 is a desktop condenser microphone engineered specifically for professional conference environments. It uses a back-electret electret condenser element and offers three interchangeable capsules: cardioid, supercardioid, and omnidirectional—enabling optimal sound pickup for diverse meeting setups. Its frequency response features a flat midrange and a slight high-frequency boost, ensuring clear and natural vocal reproduction. The compact, matte-finish metal body combines elegance with durability, making it ideal for conference rooms, lecture halls, and voice broadcasting.
Back-electret electret condenser
Cardioid / Supercardioid / Omnidirectional (interchangeable capsules)
40Hz — 16kHz
-38dB ± 3dB (1dB = 1V/Pa at 1kHz)
≤ 25dBA
130dB (T.H.D ≤ 1% at 1kHz)
48V DC, 2mA
3 meters
XLRM 3-pin male XLR (gold-plated)
The CM-290 is suited for a wide range of professional conference settings: round-table meetings benefit from the cardioid capsule’s precise speech capture; large auditoriums leverage the supercardioid pattern to reject ambient noise; and omnidirectional discussion mode uses the omnidirectional capsule for full-table coverage. Its desktop design requires no additional stand—simply plug and play. With its 3-meter cable and standard XLR interface, it integrates seamlessly with professional mixers and audio systems.
Contact us for detailed technical information or bulk procurement options for the Harmonai CM-290 Professional Conference Microphone.