Arnettpartners
You ask a very difficult and important question.Some aren't a good fit no matter what, and some take time to finally handshake, and the most dangerous of all "fit" right away and deteriorate later. Yeah I know.
No matter what, the ultimate and decisive variable is time. If the cable is in fact broken in, let it play, turn it entirely off, fire it up, play it awhile, let it sleep...give things a day or so.
Remember that the emotional intelligence of the listener varies during the month, week, and day and all music requires emotional intelligence. If it's off, the system literally won't sound right. Yeah, I know.
Time, if it works, ok; if not, no problem, make a note of it, and try something different, such as plugging it in to the wall instead of the conditioner, or visa versa. Or try switching cables in the system; the one to the preamp to the DAC and the one to the DAC to the preamp. You'll be surprised. And the same goes for the amp cord. Try to stay simple and minimize variables. One variable I'd work on no matter what is the wall receptacle: Porter Ports, Maestro, Teslaplex... each deserves attention. One might be best suited to the preamp and DAC. Another might bring out the preamp and amp, with the DAC on different receptacle.
Sorry for the rambling response!
:) listening,
Ed