I will chime in. Contacted Ed at Cabledyne for some insight:
"Xhadows RCAs have anodized aluminum barrels and the main body including the tip is silver-plated OFC solid machined copper. All signal connections are solderless in the main body, not the cover."
"Aluminum is non-magnetic and serves only as a cover/shield for the main body. All plastic coverings including shrink wrap are far worse for sonics."
"Xhadows RCAs have anodized aluminum barrels and the main body including the tip is silver-plated OFC solid machined copper. All signal connections are solderless in the main body, not the cover."
"Aluminum is non-magnetic and serves only as a cover/shield for the main body. All plastic coverings including shrink wrap are far worse for sonics."