Silver plating is used to deal with long term copper oxidation issues in some applications. That’s part of why it tends to be the spec part in aerospace applications. Aircraft, military, etc. This does not mean it is perfect for home audio. Some like it, some don’t. 7 strand configurations sound different than the 19 strand configurations.
The last time I played with this, which is back in 1990-92 or so, I was making woven multi strand and multi-awg power cords and speaker cable from belden’s best silver plated copper, with 600VAC rated Teflon skins. I’ve still got some of it kicking around... I was using 4 different gauges, woven, IIRC.
At the same time, I was making interconnects from silver plated copper RG-62 cable cores, and with 4 core strands, woven. A rg-62 core, in some RG-62 cable designs...is a silver plated copper wire, with a Teflon or poly strand woven around it, to keep it away from the outer poly semi-hard skin, so the wire is supported by a good dielectric -- and then surrounded by air.
Sound familiar?
I sold them through Glen Sinclair, of Audio Two, down in Windsor, Ontario. He sold them into the US. I sold about +50 pair like that. They went all over the upper eastern seaboard of the US. I guess people liked them. Audiophiles are talkative about things that work and sound great. Anyway...some years later.....this particular interconnect configuration arrives as a new thing, via some company....
Copper oxide sounds worse than silver oxide, as well.
Pure silver would be prohibitively expensive. But probably an excellent choice.
High final AWG (eg, 10/12awg) complex multi-strand sized and type speaker wiring would be most beneficial, but is not AC power rated. Nice idea, but don’t do it.
