1. These two adapters transmit 4 analog XLR audio signals over a single RJ45 network cable, connecting audio from mixers, microphones, and instruments to the XLR ports and routing all 4 signals through a shielded balanced Ethernet cable to the other adapter. 2. RJ45 ports for professional audio, video, and networking applications. XLR base connectors with 3pin XLR and 6.35mm jack. Aluminum alloy housing, integrated, durable allmetal casing. 3. Our versatile extender includes a 4channel extender that works with other 3pin XLR systems, microphone or linelevel signals. Enjoy balanced digital/analog transmission and clear, quality sound without residual noise in a variety of indoor and outdoor environments. 4. Connect multiple lighting consoles, microphones, instruments, speakers, and other audio signals with a single central cable. for sending stage lighting or audio to a remote mixer or lighting console—all while reducing costs and eliminating the clutter of multiple cables. (Cable not included, extension only).