I have listened to many different brands of cables over the years and most do have a house sound. I have not listened to the model purist you are asking about but compared to the Synergistic Reference I would say that darker is a pretty good description. The SR cables are very neutral with great detail without any extra colorations.
Something to consider when thinking about cables is that it is impossible for a cable to add anything to the signal.
Something to consider when thinking about cables is that it is impossible for a cable to add anything to the signal.