Learn all secrets of the RK-004

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RK-004 Manual


The RK-004 is a true plug-and-play MIDI connection device. Every port is bi-directional and can receive and forward full MIDI. The RK-004 is also able to control the master clock modifications on each individual port so you can get truly creative with connected sequencer devices. On top of that it can also slave to – or send out gate-signals. Easy 5V power which it can ‘borrow’ from a USB connection or a separate power supply like a phone charger.

From using the RK-004 as a ‘Plain Jane’ thru box up to detailed MIDI clock manipulation and merging 7 ports of MIDI into a RaspberryPi serial connection? Our online manual discloses all!

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