For over a decade, Mackie Big Knob has been the go-to monitor controller for studios the world over. But, now that they've added in the high-resolution goodness of an Onyx recording and playback solution, Big Knob Studio truly becomes the nerve center for your studio. In addition to its usual professional source and monitor selection, it offers a flexible 2x2 USB recording interface with two of Mackie's flagship Onyx mic preamps.