Modulation Mode
PLL synthesis
Professional audio, microphones and system integration

Harmonai GP-900 is a professional-grade UHF wireless microphone system utilizing PLL (Phase-Locked Loop) synthesis technology. It operates across the 640–699.7 MHz frequency band and offers 2×100 = 200 selectable channels. FM modulation mode combined with fine 0.3 MHz channel spacing ensures precise frequency selection. With an effective transmission distance of up to 120 meters and switchable high/low power transmission modes, it delivers exceptional flexibility. Featuring a dynamic range of 100 dB, a total signal-to-noise ratio of 98 dB, and total harmonic distortion ≤0.8%, it delivers exceptionally clean and clear audio. Ideal for conference rooms, live stages, classrooms, and other professional sound reinforcement applications.
PLL synthesis
640 MHz – 699.7 MHz
2×100 CH (200 channels)
0.3 MHz
±0.005%
100 dB
20 Hz – 18 kHz
98 dB
≤0.8%
High power: 10 dB / Low power: 8 dB
120 meters
≥60 dB
−10 °C to 55 °C
Suitable for conference speaking, stage performances, teacher training, wedding hosting, on-site interviews, KTV entertainment, and other professional sound reinforcement scenarios. The 200-channel selection and 120-meter transmission range support flexible multi-channel use in large venues. High/low dual-power modes adapt seamlessly to varying room sizes — balancing energy efficiency and performance.
For more technical details or pricing information about the Harmonai GP-900 wireless microphone system, feel free to contact us for expert consultation.