The M-Audio AIR | Hub is high-quality desktop monitor controller with a built-in 24-bit / 96 kHz DAC and an integrated 3-port USB hub, well suited for musicians and producers who need a professional monitoring solution. The rugged metal chassis utilizes a large knob to control the level to a pair of 1/4" balanced TRS connectors suitable for studio monitors. A separate, independently controlled 1/4" headphone output provides private listening. The front three USB ports allow you to connect a variety of devices to your computer including MIDI controllers, portable devices, flash drives, and more. The M-Audio AIR | Hub includes a power supply, a USB Type-C to USB Type-C cable, a USB Type-C to USB Type-A cable, and a suite of software.