Silver on AC plugs always sounded a tad thin and tipped up. Silver hook up wire in my builds always sounded a tad thin with less body than I care for and very detailed. Silver in my cable builds …. the same result. Always.
Expensive silver cables from other manufacturers can sound smooth, silky and nicely detailed. However, they still lacked the body, weight and meatiness of great copper. I suspect this is a subjective reality for me. Not something that is true always for all listeners. Welcome to the world of audio🙂.
As far as digital goes I find silver even more reflective of my above statements. This has been my experience in dacs and with USB cables. Again, I think this is absolutely subjective and a sensitivity I happen to have. This is not truth for all.