Control Chain Devices
Control Chain is an open standard, including hardware, communication protocol, cables and connectors, developed to connect external controllers to MOD audio processors such as footswitch extensions, expression pedals and so on.
Compared to MIDI, Control Chain is much more powerful. For example, instead of using hard-coded values as MIDI does, Control Chain has what is called device descriptor and its assignment (or mapping) message contains the full information about the parameter, such as its name, absolute value, range and any other data. Having all this information on the device side allows developers to create peripherals that can show the absolute parameter value on a display, use different LED colors to indicate a specific state, etc. Pretty neat, right?
And remember: you can daisy chain up to 4 Control Chain peripherals to your MOD Duo!