Frequency Range (Receiver/Transmitter)
640–690 MHz
Professional audio, microphones and system integration

The Harmonai MR80 is a professional UHF 8-channel headworn wireless conference microphone system, engineered for large-scale conferences, training sessions, and live events. The system includes one high-performance receiver and eight headworn transmitters, operating in the 640–690 MHz UHF band using FM modulation to ensure stable, pristine audio transmission. The receiver features -94 dBm high sensitivity and >60 dB image rejection, delivering a signal-to-noise ratio of up to 105 dB and a dynamic range exceeding 100 dB. Total harmonic distortion remains below 0.5%, guaranteeing clear, authentic professional-grade audio. The lightweight, comfortable headworn design frees your hands and supports extended use during meetings or presentations.
640–690 MHz
-94 dBm (30 dB)
FM
±45 kHz
50 Hz–18 kHz (+3 dB)
>105 dB
>100 dB
<0.5%
>60 dB
±0.005%
80 MHz
30 mW
130 dB SPL
<-63 dBm
<110 mA
DC 12 V / 1 A
2 × 1.5 V AA batteries
-10°C to 55°C
8 channels (one receiver, eight transmitters)
The Harmonai MR80 8-channel headworn wireless microphone system is ideal for diverse professional audio environments: Large Conferences & Forums — 8-channel capability supports multiple speakers simultaneously; Training Classrooms & Educational Institutions — headworn design enables instructors to move freely and interact while writing on boards; Live Performances & Stage Events — reliable UHF transmission and high-fidelity audio ensure consistent stage sound; Weddings & Banquet Hosting — lightweight, comfortable wear for extended periods; Corporate Training & Seminars — multiple microphones facilitate group discussions and interactive Q&A sessions.
Contact us today for more product details or customized professional audio solutions.