GP-900 product display image

Product Overview

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.

Modulation Mode

PLL synthesis

Frequency Range

640 MHz – 699.7 MHz

Total Number of Channels

2×100 CH (200 channels)

Channel Spacing

0.3 MHz

Frequency Stability

±0.005%

Dynamic Range

100 dB

Frequency Response

20 Hz – 18 kHz

Total Signal-to-Noise Ratio

98 dB

Total Harmonic Distortion

≤0.8%

Transmit Power

High power: 10 dB / Low power: 8 dB

Operating Distance

120 meters

Mirror Image Interference Rejection

≥60 dB

Operating Temperature

−10 °C to 55 °C

Recommended Applications

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.