you can't have both. if you want warmth achieve the desired warmth and settle for the detail that comes with it.
if you want resolution, determine the level of resolution that you want and accept whatever warmth occurs. it is easier to approach your goal that way, than to try to be an alchemist.
given my suggestion, which is more important and what do you mean by warmth ? i may be able to make a suggestion, as i have auditioned many cables.