The Mackie Control Extender Pro control surface extension lets you easily expand your Mackie Control Universal Pro control surface. Seamlessly add eight motorized, touch-sensitive Penny + Giles faders and V-Pot channels at a time via a direct connection to the MCU Pro master module - no extra hardware required. Proprietary Mackie communication protocol for seamless software integration by DAW makers 100mm touch-sensitive optical Penny + Giles motorized faders Multi-function V-Pots for fast contr