Carrier Frequency Range
640–690 MHz
Professional audio, microphones and system integration

The Harmonai SOM-4200 is a professional-grade UHF wireless microphone with a wide carrier frequency range of 640–690 MHz and an exceptional frequency response of 40 Hz–18 kHz (±3 dB), accurately reproducing vocal and instrumental detail. Its signal-to-noise ratio exceeds 105 dB, effectively suppressing background noise and interference to ensure pure, clear sound. Powered by two AA alkaline batteries, it offers plug-and-play convenience and is suitable for diverse professional settings including KTV entertainment, business meetings, stage performances, and more—making it a dependable choice for professional audio systems.
640–690 MHz
40 Hz–18 kHz (±3 dB)
>105 dB
12 dBµV (80 dB S/N)
±0.005%
2 × (1.5 V) AA alkaline batteries
Thanks to its wideband UHF carrier, high signal-to-noise ratio, and excellent frequency stability, the Harmonai SOM-4200 is ideal for vocal reinforcement in KTV rooms and entertainment venues, clear voice pickup during business meetings and presentations, live sound reinforcement for stage performances and roadshows, and training and education environments requiring reliable wireless audio transmission. The AA battery power solution eliminates charging downtime—simply swap and go—to support extended continuous use.
Contact us for detailed technical specifications or bulk procurement options to receive a professional quotation.