Powerful controller is equipped and easy setup with Mackie Control and HUI protocol. Backlit LED touch fader reacts in real-time with DAW. Synchronize automatically with different channel value when switching between channels. Dual function encoder knob (Enter & rotate). 11-segment LED surrounding the encoder to indicate the rotating position. Velocity-sensitive piano style keyboard Modulation and Pitch jog-wheel 3-segment LED screen. 18 assignable LED backlit buttons. Illuminated channel buttons including Rec-enable, Solo and Mute. 6 illuminated transport buttons including Play, Stop, Rec, Rewind, Fast forward and Loop Octave up/down buttons. Transpose up/down buttons Multi velocity curves available for selection (Key and Pads). Midi output jack Expression & sustain pedal TRS connectors. Sustain pedal connector polarity reversible. Class-compliant with Windows 7, 8 & 10 (32-bit & 64-bit), Mac OS X (IntelMac) and iOS. USB 2.0 high speed connectivity. Mackie control build-in for Cubase, Nuendo, Samplitude, Logic Pro and Abelton Live. Mackie HUI protocol build-in for Pro Tools iMap software included for easy mapping of MIDI functions. Firmware upgrade available simply via USB connection and iMap software. Robust metal casing with Kensington lock port