AVID S4 16 Control SurfaceIncluded S4 modulesS4 is semi-modular, enabling you to configure a control surface with up to three Channel Strip Modules (for 8, 16, or 24 faders, depending on configuration), four Display Modules, and up to three optional modules for your workflow needs. Core components that come with all Avid S4 configurations include the S4 Frame, Master Touch Module, Channel Strip Module, and Automation Module. The fully integrated Channel Strip Module and preassembled frame streamline configuration and setup, so you'll be up and running quickly.S4 Frame: Preassembled frame layout for your control surface, available in 3-, 4-, or 5-foot widths to accommodate configurations of up to three Channel Strip ModulesChannel Strip Module: Lets you control track levels, plug-ins, and other parameters via eight channel faders, 32 top-lit knobs (four per channel), and additional keys and switchesMaster Touch Module: Gives you quick access to your mix and control parameters through a tilting 12.1-inch multipoint touchscreen, plus eight adjacent rotary encoders and other dedicated knobs and keysAutomation Module lets you navigate and automate projects efficiently with a full transport control section that includes a shuttle/jog wheel, a focus fader, automation control, a numeric keypad, and additional keys and switches