- 2 adapters transmit 4 analog XLR audio signals via an RJ45 network cable, connecting the sound from the mixer, microphone and instrument to the XLR connector, and forward all 4 signals to the other adapter via a shielded, balanced Ethernet cable. RJ45 cable not included. - It uses unique symmetrical and symmetrical characteristic impedance conversion transmission and analog audio spread spectrum isolation technology with anti-interference functions. It can effectively solve the device distortion and audio noise caused by long audio transmission lines or earth potential difference loop current, eliminating audio background noise and other phenomena. - It is ideal for sending stage light or audio signals to a remote mixer or light desk. At the same time, it reduces costs and avoids tangled cables. - Our versatile expander can be used with and other 3-pin XLR systems, microphones or line levels. Enjoy balanced digital/analog transmission and clear, crisp, high-quality sound without residual noise in a variety of indoor and outdoor environments.