Hi. This is mostly an FYI. I realized recently that when sending CC messages via an expression to some of my devices (specifically Line 6 HX Stomp /Helix, and Moog synthesizers) connected from the MC6PRO through a MIDI Solutions Quadra Thru Box resulted in erratic behavior on the device parameter I was controlling via the expression pedal. However, the erratic behavior was eliminated when I switched to a powered CME MidThru5 box. For whatever reason, the CME box seems to handle the stream of CC messages coming from the expression pedal better. Anyway, like I said mostly FYI, although I’d be curious to know the reason. Cheers.