Not sure if this helps but from the MIDI Solutions website:
MIDI Solutions MultiVoltage products are compatible with both the original 5V and new 3.3V MIDI specifications
I have a Quadra Thru and it works with my OT DN and TR8S for sure. Uncertain what the voltage output is for this mini jack MIDI ports though.
Edit: This site might also shed some light:
I was thinking that the mini jack style might not provide proper voltage but the above site seems to suggest it does. Depending on if a jack is Type A or Type B mini would determine if the Source that provides the +5V is on the tip or on the ring. A search on the same above site suggests that the M:S can be both A and B. Admittedly, the mini MIDI standard is not something I have exposure to.
Edit 2: From MIDI Solutions site. A list of devices that are rumored to NOT power their devices:
Only Elektron devices on that list are the Machinedrum MK1, Monomachine MK1