In this last photo of Wayne Sermon's third pedal board, source from the Rig Rundown with Imagine Dragons, a Quadra Thru sits at the top of this board.
Robin Finck uses a MIDI Solutions Quadra Thru, according to [this](http://www.guitargeek.com/robin-finck-nine-inch-nails-guitar-rig-and-gear-setup-2014/) detailed gear diagram of Robin Finck's Nine Inch Nails stage setup.
"This rig is very simple, but one of the best sound rigs I have ever worked with" - Chet Haun (Gus G's Guitar Tech)
Next to the KP3, you can see a Quadra Thru.
This this is very easy to use and useful. So long as the midi device connected to it's MIDI input follows standard MIDI protocol by providing 5v, it is MIDI-powered!
needed to send midi to all my synthesizers.
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