At first I was reluctant to select them as copper tarnishes quickly despite being a better conductor than gold. The included heat shrink provides excellent metal and connection protection. I also have silver banana plugs and they haven't tarnished in two years thanks to heat shrink tubing. Some people will prefer silvering the copper, but to me the copper has a warmer tone but is also very detailed. They have small hex head screws, which is a little inconvenient if you don't have the right hex wrench, but at least they don't break off like countersunk screws.
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