Inner metal: Pure copper. The electrical conductivity is superior. The copper can be plated with 18K golden/ 24K golden/ Rhodium/ Silver etc.

Body materials: 100% new PC with superior hardness and uniform color.

Our duplex receptacles, manifesting a devotion to best performance in every element of AC and signal transfer Considering that what you actually hear is in a very real sense the direct product of the incoming AC then the final few feet are of prime importance for best performance.