The RK-002 ‘Smart MIDI cable’ has already found it’s way in various setups, not just for the volca Sample. It looks like a +/-1.5m ordinary male-male MIDI-cable but has a microprocessor on board which ‘bends’ midi data on the fly. Read more about the RK-002.
Firmware flavours available for the Volca FM, Volca Sample or even an Arpeggiator; Applicable for a wide range of synths which lack this functionality.
IMPORTANT NOTE: It is not wise to use multiple midi-powered devices on one output. You should use a thru box and not an audio splitter or such.
And a special warning for the MIDI Solutions Quadra thru. It is a thru box, but a MIDI powered one…no go. On occasion it seems it can even leave the RK-002 in unuseable boot mode so better not use this box with the RK-002!