1. Our two adapters transmit 4 analog XLR audio signals over an RJ45 network cable, connecting audio from mixers, microphones, and instruments to the XLR port and routing all 4 signals through a shielded, balanced Ethernet cable to the other adapter. (RJ45 cable not included). 2. Our versatile expander is compatible with 6.5mm and other 3pin XLR systems, microphones, or linelevel devices. Enjoy balanced digital/analog transmission and clear, crisp, quality sound without residual noise in a variety of indoor and outdoor environments. 3. It is ideal for sending stage lighting or audio signals to a remote mixer or lighting console. At the same time, it reduces costs and avoids cable clutter. 4. It utilizes a unique balanced and symmetrical characteristic impedance conversion transmission and analog audio spreadspectrum isolation technology, featuring noise suppression and interference resistance. It effectively resolves device distortion and audio noise caused by long audio transmission lines or ground loop currents, eliminating audio background noise and other issues.