I just purchased some RB81's and was sort of disappointed that the binding posts look like they are nickel plated. The straps also looked fairly cheap. I have a friend who has the RB75's which have gold plated posts and nice straps. I figured for nearly twice the price of the RB61's that the 81's would have better quality posts. I've already replaced the straps with short pieces of 14 gauge OFC.
What are the binding posts made of anyway, nickel plated copper, brass, steel or something else?