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 ???¼??? no extra hardware required. ???º??  Proprietary Mackie communication protocol for seamless software integration by DAW makers ???º??  100mm touch-sensitive optical Penny + Giles motorized faders ???º??  Multi-function V-Pots for fast control of panning, effects levels and more ???º??  Channel mute, solo, pan, send level and record arm functions ???º??  Full meter display with track names and parameters Communication is the basis for any great relationship.That????s what makes Mackie Control Pro Series controllers the perfect match for your music production software. Thanks to their unique proprietary communication protocol, Mackie Control Pro Series controllers know just how to sweet-talk your software, and your software knows just how to respond. You get deep, intuitive control of mix and plug-in parameters, real-time visual feedback, and setup is plug and play ???¼??? no MIDI mapping head games! Mackie Control Pro Series controllers make it easy to grow the relationship, too. The Universal Pro control surface, Extender Pro control surface extension and C4 Pro plug-in and virtual instrument controller all seamlessly integrate, so you can put control of all your software parameters right at your fingertips. Simply put, Mackie Control Pro Series controllers give your music production software what it needs to feel complete. Warranty:LOUD Technologies Inc. warrants all materials, workmanship and proper operation of this product for a period of five years from the original date of purchase with the following exception: warranty on all its loudspeaker components including woofers and compression drivers are only warranted for two years. If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period, LOUD Technologies, at its option, will repair or replace the product. This warranty applies only to equipment sold and delivered within the U.S. by LOUD Technologies Inc. or its authorized dealers.