Generally speaking,
Once you get the unit\s you need to identify the I\O tranny ratio and order an IO trannies with the same specs.
You might want to have a look here for transformer information regrading neve type circuits.
Neve transformer info
I hope some company will step up and rebrand this unit for mass production at a decent price becuase this looks like a great deal,
I want to belive that even with stock trannies this might sound like a great colored pre. thumbsup