Looking for the ideal high-quality audio interface monitoring hub? Here it is: AIR|Hub is a USB hub with two balanced ¼-inch TRS audio outputs, controlled by a large, solid-feeling metal rotary level knob. There are three USB inputs and a ¼-inch headphone jack with level control for private listening. The AIR| Hub is the ideal way to unite your VI control and audio output in one sleek, all-metal, space-saving solution.