Product Overview

The Harmonai ACT-725 is a professional-grade dual-channel wireless microphone system, featuring true diversity reception and a double-conversion superheterodyne architecture operating across the UHF 500–900 MHz wideband. Its effective transmission distance reaches up to 750 meters (subject to environment). The system offers 200 selectable channels with 200 kHz channel spacing and frequency stability within ±0.005%, ensuring reliable performance even in complex electromagnetic environments.

With a combined signal-to-noise ratio of >110 dB, an audio response range of 40 Hz–18 kHz (±3 dB), and total harmonic distortion of ≤0.2%, it delivers clear, pristine audio for professional applications including conference speaking, stage performances, education & training, and KTV entertainment. Compatible with both handheld and bodypack transmitters, it features a ¼-wavelength whip antenna and is powered by two AA batteries for convenient, reliable operation.

Recommended Applications

Conference Speaking: Dual-channel design supports two speakers simultaneously; 200 channels enable flexible interference avoidance—ideal for medium- to large-sized meeting rooms and auditoriums.

Stage Performances: 750-meter transmission range and >110 dB SNR ensure consistently clean, stable sound throughout the show; true diversity circuitry prevents dropouts.

Educational Training: UHF wideband operation and broad 40 Hz–18 kHz frequency response deliver every syllable with clarity during lectures and interactive instruction.

KTV Entertainment: Choice of handheld or bodypack transmitters; 20 mW output power covers entire venues; dual-channel support enables duet singing.

Outdoor Events: Wide operating temperature range (-25 °C to +40 °C) suits diverse outdoor conditions; true diversity reception achieves up to 500 meters range in open areas.