The Attero Tech unDIO2x2+ I/O interface is a 2in/2out, cost-effective way to add up to two channels (in and out) of Dante™ audio to any Dante™-based networked audio system. The unDIO2x2+'s small form factor and PoE power capability make it easy to put Dante™ connectivity wherever it's needed - near the audio source or sink thereby eliminating costly and interference prone analog wiring. The unDIO2x2+ is an upgrade of the earlier unDIO2x2, and adds several features including true +48V phantom power, maximum input and output levels of +20dBu, added input gain settings, and full output level control.