The Chord SignatureXL Speaker Cable(Pair) is the latest version of Chords longest-running and most loved products. The Signature was the first high-frequency shielded speaker cable released by Chord a more→nd was a massive leap forward in cable performance. Previously PTFE insulation (Teflon) was used. Now Chord uses Taylon. Although its expensive Taylon really will enhance the listening experience and improve the performance of your cables. This is why Chord have used this in their signature range to provide the best quality cables for your system. The Chord SignatureXL Speaker Cable now houses the latest ChorAlloy™ technology to refine the connection quality.