Jeffreybehr,
The ZYX UNIverse is a phono cartridge, not a cable. Check out the review beneath my signature for details.
FWIW I concur with Cello. In our system and to our ears the copper vs. silver differences were not subtle. If someone slipped a silver onto my tonearm without telling me we'd know in an instant, on virtually any LP. We prefer the lifelike energy of the copper but many people love the silver, so YMMV as always.