Speaker wire: the cable is tinned and Oxygen free copper (OFC) to deliver high-quality sound without any transmission loss.
Marine grade: Marine grade speaker wiring made simple. Just use high quality Marine duplex wiring with it’s fine Stranded tin Plated copper to resist corrosion.
Tinned material: the added benefit of an overall jacket for added protection. Don’t settle for untinned speaker wire where the copper will turn Black!