The Chord Signature XL Speaker Cable (Pair) is the latest version of Chords longest-running & most loved products. The Signature was the first high-frequency shielded speaker cable released by Chord & 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 & 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 Signature XL Speaker Cable now houses the latest Chor Alloy™ technology to refine the connection quality.