The surface of a conducting wire carries the signal the truest. This results in different types of cable giving different inherent qualities of sound. For example, a multi-strand cable offers a cost-effective and durable option. On the other hand, higher end multi-stranded cables ensure the individual threads of wire stay in the same place throughout the cable, minimising the times the electrical signal jumps from one strand to another. Silver-plated oxygen-free copper generally has a bright characteristic, due to higher frequencies travelling down the outside of the strands. Solid core cables give a low-distortion option, ensuring the cleanest signal path. This does rely on the conductor having a particularly pure surface however.