The AOE-212N audio over Ethernet network is an easy to use solution for transporting audio signals over Ethernet TCP/IP based local and wide area networks (LAN/WAN) as well as the Internet. The AOE is bi-directional 2-channel audio transmission over TCP/IP LAN or WAN Ethernet network. Control of Local and remote equipment is possible using the built in eight programmable trigger inputs to initiate and terminate audio transmissions, eight programmable open collector control outputs as well as the RS-232 and RS-422 serial port for data transmission/reception. Long distance digital transmission of balanced analogue audio signal is possible without electro-magnetic interference, signal loss or distortion. High quality uncompressed 24-bit digital audio at 48kHz transmitted over TCP/IP network with S/N better than 85dB, THD less than 0.01%. Simultaneous support of AC and DC power offering un-interrupted broadcast with emergency battery back up in the event of power outage.