Mackie MCU Extender Pro 8-Channel Control Surface ExtensionMCU Pro rounds out your software’s functionality to deliver the ultimate in hands-on command. In fact, your software was designed with MCU Pro in mind. Developers access the MCU Pro via its unique communication protocol — pioneered by Mackie — and determine precisely how MCU Pro works for you. That means MCU Pro integrates with your software like no other hardware controller.Features:Proprietary Mackie communication protocol for seamless music production software integration 100mm touch-sensitive Alps motorized faders V-Pot control over software, plug-in effects and virtual instruments More than 50 dedicated push-buttons for fine control of software parameters Tape-style transport controls Full meter display with track names and parameters Quick cursor-style buttons for Up, Down, Left, Right and Zoom Onboard USB MIDI interface for direct connection to Mac or PC and up to 3 additional pieces of external MIDI gear Software-specific Lexan overlays included Expandable via optional Mackie Control Extender Pro and C4 Pro modules Includes Tracktion 3™ Music Production Software for Mac or PC