
Harmonai ACT-550 Dual-Channel True Diversity Wireless Mic — 500m UHF Range
The Harmonai ACT-550 is a professional dual-channel true diversity wireless microphone system operating in the UHF 610–690 MHz band with up to 500 meters of line-of-sight transmission range. It features 2048-bit symmetric encryption digital pilot tone technology to eliminate frequency interference and eavesdropping, supports up to 12 simultaneous systems, and includes one-touch auto-scan for fast setup — ideal for live stages, conferences, multi-purpose halls, and more.








