The xIO Stage 4×4 shall provide four XLR analog mic/line inputs that are adjustable from line to mic level with coarse gain and phantom power and four XLR analog line outputs. Levels and phantom power shall be controllable via DSP modules in software. Network audio expansion shall be provided by the Dante protocol. The connector shall be 100 Base-T RJ45 utilizing CAT6 cable. A designer software application shall be provided that operates on a Windows computer, with network interface installed, running Windows® 7 or higher operating system. Computer connection for configuration shall be via a hosting DSP unit’s rear panel Ethernet connector that communicates with the devices via Dante. The front panel shall include indicators for POWER, ETHERNET, and AUDIO BUS. Audio conversion shall be 24-bit, 48 kHz and the dynamic range shall not be lower than 112 dB, A-weighted with a maximum input level of +23 dBu and maximum output level of +24 dBu.