Pro-Ject Audio Connect It LS RS Speaker CableThe Connect it LS RS speaker cable uses four 0. 75mm solid core conductors made of high purity OCC copper which is produced with a vertical vacuum continue casting technique. This special design can manufacture ultra purified crystal copper wires. The twisted construction reduces possible interferences and noise picked up in the signal transmission. The rhodium plated copper banana plugs with carbon isolated housing ensure perfect signal transmission