Audio bridge is a professional digital audio processor intended for fixed installation applications. It provides 8 audio channels and a GPIO interface in a compact enclosure. The device is designed for use with NION networked DSP systems in professional and commercial audio and communications applications. The 1U-high, 1/2U-wide unit can be powered directly from the Ethernet network using Power-over-Ethernet, or from a DC power supply. Each of the 8 audio channels can function either as an analog audio input to the CobraNet audio network, or as an analog audio output from the CobraNet audio network. Audio inputs accept microphone or line-level audio signals, with phantom power, and allow fine-grained remote control of input gain. Audio outputs provide line-level audio signals with fine-grained remote level control, relay mute, and direct monitoring of the analog output signal.