Audio transmission system for transporting a signal over long distances
Sennheiser Promises to Revolutionize Wireless Audio Transmission in Large Events with WMAS | audioXpress
MX Wireless Audio Transmission Set for Any Brand Powered Active Speakers with UHF PLL Technology - 16 Channel Works Upto 80 Meters 1PCS 16T & 4PCS 16R Indoor, Outdoor PA System :
Marmitek WA300 Wireless Audio Transmission - Connect Your Audio Source Wirelessly to Your Stereo - 3.5 mm Jack Connection - Wireless Audio Transmitter : Amazon.de: Electronics & Photo