The Big Knob Studio Monitor Controller and Interface from Mackie is a monitor-control solution and interface, that allows you to choose between three audio input sources and two monitor pairs. It can be used for project and professional studios and is designed to increase your workflow for recording and mixing applications.It features a built-in 2x2 USB recording interface with two Onyx mic preamps and phantom power for condenser microphones. Recording and playback is at 24-bit/192 kHz resolution and the cue mix allows for controlled blending of direct inputs with other signals for zero-latency recording. Choice of recording paths provide flexibility for applications like podcasting and more. It Includes a Pro Tools First Software. It comes with a black R100 Stereo Headphones from Resident Audio feature 40mm full-range drivers that deliver a frequency response of 20 Hz to 20 kHz. Plus an extra XLR- XLR Cable. Box Contains Mackie Big Knob Studio Monitor Controller and Interface Free Pro Tools First Software1-Year Warranty Resident Audio R100 Stereo Headphones (Black) 1/8" to 1/4" Headphone Adapter1-Year Warranty Extra XLR- XLR Cable 90-Day Warranty