Product Overview

The Harmonai ACT-804 headworn wireless microphone is a professional-grade UHF wireless headworn microphone system designed for speeches, classroom instruction, live performances, and conferences. It operates in the UHF 615–695 MHz band using PLL frequency synthesis technology, offers 200 selectable channels, and supports up to 15 units operating simultaneously without mutual interference. The headworn design frees your hands, and the cardioid condenser capsule delivers precise, clear audio capture with an effective pickup distance of 50 cm.

The system features digital pilot tone technology and noise-lock squelch control to effectively resist electromagnetic interference from mobile phones, ensuring stable signal transmission up to 150 meters. The receiver includes an LCD display for real-time status monitoring, and output interfaces include four XLR outputs and one 6.35 mm (1/4") jack—compatible with a wide range of professional audio equipment.

Recommended Applications

The ACT-804 headworn wireless microphone is widely used in speech training, classroom instruction, stage performances, wedding hosting, conference presentations, and fitness coaching—any scenario requiring hands-free operation. Its cardioid pickup pattern effectively rejects ambient noise, ensuring clear vocal reproduction. With support for up to 15 units operating concurrently, it meets multi-microphone requirements for large-scale events.