Eric, I think Audio4pass has it right about CMR. The new CMR and CSA ranges are calmer, in the sense of underlying quiet background, and more natural and unforced timbre and coherence across the entire FR. It takes around 200 hours for break-in.
One of my OEMs who just completed his evaluation of CSA, reported that it is the first metalized polypropylene cap he has experienced with rock stable measured capacitance across the entire break-in cycle. That’s not to say that the sound doesn’t change through break-in, but rather that the copper ends exhibit a stable impedance that is unachievable with standard tin-zinc end sprays.
Thanks for your impressions of the cap.
Dave
ClarityCap OEM Sales