Avid Pro Tools MTRX II Pro Tools Base Unit with DigiLink, Dante 256 and SPQProducers, engineers, and mixers can take on the largest music or audio post productions with the Avid Pro Tools MTRX II Audio interface (Base Unit), a powerful studio centerpiece that offers exceptional sound quality, I O customizability, and extensive routing and monitoring control in one interface. Used as a standalone or with Pro Tools HDX, other DAWs, and Avid control surfaces, Pro Tools MTRX II builds on the versatility of its predecessor,