Product Overview

The GP-300 is a high-performance UHF-band wireless microphone from Harmonai, operating in the 640MHz–690MHz frequency range. It offers 200 selectable channels (2×100) with 250kHz channel spacing to effectively avoid co-channel interference. Its overall signal-to-noise ratio reaches ≥103dB, frequency response covers 40Hz–18kHz (±3dB), and total harmonic distortion is ≤0.3%, delivering clear and pristine vocal reproduction.

Transmitter output power is ≤20mW, enabling an approximate transmission distance of 80 meters in open environments. It uses FM modulation (max ±75kHz), features a BNC 50Ω antenna input on the receiver, and provides both balanced and mixed audio outputs—meeting the demands of stage performances, conference speaking, teaching, and training. The transmitter is powered by two AA batteries, offering 4–10 hours of runtime with plug-and-play convenience.

Recommended Applications

The GP-300 is suitable for stage performances, conference speaking, teaching & training, wedding hosting, and KTV entertainment. Its 200-channel capability and ~80-meter transmission range ensure reliable operation in complex RF environments. Balanced and mixed outputs are compatible with a wide range of mixers and power amplifiers—making it an ideal wireless microphone for professional audio systems.