Well....that interface produces mechanical and electrical impedance mismatches that each negatively affect cable performance. Dealing with connector as a mechanical issue reduces the micro-phony, and we have devoted considerable effort to deal with that issue. And in our case the electrical issue has been dealt with by virtue of the liquid conductor's very wide band-width, which btw is mainly what cable doubling with normal solid cable adds to the audio buffet table ( see Bob Smith's excellent comments on this ). What that does is help reduce cable generated noise that is a function of reflection from the conductor/connector impedance mismatch . An analogy might be akin to removing room generated noise, echo, to produce an acoustically correct room. And I think the initial shock that listening to doubling produces is the removal of that noise which is something most folks have had to live with all their audiophile lives, it was almost like the air we breathed as a community ( except of course those who have been enjoying those benefits with our broad-band capable cables...and btw in our doubled cables the doubling effect is even more pronounced than in other doubled cables that rely on solid metal for conducting because we enjoy a significant head start having an already broad bandwidth ).
