Gold-plated binding posts
The  best electrical conductor known to man is gold. Gold transfers electricity with the lowest resistance (at room temperature) of all known materials. In those systems where there must be no compromise, gold-plated connections are used to maintain the integrity of the audio signal.
Gold also is one of the few high-conductivity metals that resists corrosion, even under adverse environmental conditions, like those found inside a car or boat. For these reasons, Sony chooses to plate their high end speaker connectors with precious gold. This ensures a long-lasting and low impedance connection. |
