DartZeel NHB18 with other brand poweramps

this new topic following a reply in 'Siriusly it's the room' tread:

i'm very interested in experiences from any Dart owner/dealer on matching the Dart pre with other poweramps be it true balanced or SE.
we mostly see Dart combo users, and for reason i must conclude..
now Herve has strong opinions on balanced topology, his white papers on this are clear enough, see the website.
the Dart concept is purely single ended with a less is better approach. and so the 'B' version has the little transformers on the output/inputs.- correct me if i'm wrong here- a very clever solution but in theory there are losses with any transformers. then again with a true balanced concept there are twice the parts and twice the amount of transistors (or tubes).. my personal experience has shown me; more transistors and more parts equals less purity. now tonal purity is just one parameter but an important one though.
ymmv

with the Stereophile NHB18 technical review by John Atkinson there were strange behaviours found on the XLR inputs/outputs when measured. pls look up the issue.
to me it is not clear whether the review example was a 'B' version or not.
following his peculiar findings, which we leave up to the factory to discuss -would be great to have Mr Delatraz himself reply- it is the more interesting what actual field owners experience when partnering the Dart 'B' preamp to a non Dart poweramp.

i'm both in admiration and saving up for the NHB18.

cheers