Frequency Range
500–950 MHz
Professional audio, microphones and system integration


The Harmonai AC990 is an 8-channel wireless antenna distributor engineered specifically for multi-channel wireless microphone systems. It covers an ultra-wide frequency band of 500–950 MHz and provides +6–9 dB signal gain to effectively boost signal strength. Its unique cascading capability allows multiple distributors to be connected in series, sharing a single antenna pair—greatly simplifying system deployment and cabling. The standard 50Ω impedance matching ensures optimal signal transmission quality, while the BNC female connectors offer convenient and reliable connections. With universal 100–240 V AC input (50/60 Hz), it meets global power standards; its low power consumption of 170 mA makes it energy-efficient.
500–950 MHz
+22 dBm
4.0 dB (Center Band)
+6–9 dB (Center Band)
≥15 dB min
50 Ω
450 MHz
BNC female
100–240 V / 50/60 Hz
170 mA
Supports multiple units in series, sharing one antenna pair
The AC990 antenna distributor is ideal for diverse professional wireless system environments: managing signals centrally via cascading during large-scale live events with multiple simultaneous wireless microphones; ensuring stable transmission and signal enhancement for multi-channel wireless mics in broadcast studios; deploying multiple parallel wireless systems in large venues such as conference centers and hotel ballrooms; and maintaining signal integrity in complex electromagnetic environments—including outdoor events and trade shows.
For more product details or customized wireless system solutions, contact the Harmonai professional team.