Harmonai ACT-434 Quad Wireless Microphone System product image

Product Overview

The Harmonai ACT-434 is a professional-grade quad true diversity wireless microphone system, engineered for multi-speaker environments. It employs PLL phase-locked loop frequency synthesis technology and infrared synchronization, supporting up to four transmitters simultaneously. In open spaces, transmission range exceeds 500 meters, making it ideal for large-scale conferences, stage performances, and educational training.

The receiver features a true diversity architecture, combined with dual noise squelch control — noise-lock and tone-code navigation — ensuring stable, reliable signal reception and effectively suppressing dropouts and inter-channel interference. Each transmitter includes an LCD digital display, enabling seamless switching between 32/64/99 channels, with real-time operational status clearly visible. Intelligent low-battery warning prevents unexpected power loss during use.

Product Type

Quad true diversity wireless microphone system

Number of Channels

4 channels

Operating Distance

Over 200 meters (up to 500+ meters in open space)

Operating Frequency Band

600–690 MHz (UHF)

Frequency Technology

PLL phase-locked loop frequency synthesis technology

Synchronization Method

Infrared synchronization

Channel Selection

Transmitter: 32/64/99 channels; Receiver: 32/64 channels

Display Type

LCD digital display

Frequency Stability

±0.002%

Max FM Deviation

±45 kHz

Squelch Control

Noise-lock squelch + tone-code navigation squelch

Reception Method

True diversity reception

Transmitter Power Supply

2 x AA batteries

Transmitter Battery Life

Approx. 8 hours

Brand

Harmonai

Recommended Applications

Ideal for large conferences, educational training, live performances, wedding hosting, and outdoor events — any scenario requiring multiple speakers. Four independent channels operate without interference, and true diversity reception guarantees signal stability, making it the optimal choice for professional sound reinforcement.

Learn more about Harmonai’s professional wireless microphone solutions — contact us for detailed pricing and technical support.