Unity's Solid Link Shotgun biwire speaker cable consists of high purity solid core copper conductors in a Litz configuration. Each conductor is insulated with PVC, and PVC outer jacket. Outer jacket resists abrason, and looks great! Can be configured as a biwire cable.
The Solid Link line of cables are a great match for Tripath amps as well and were used as used by 6 Moons for there Trends Audio product review: www.6moons.com/audioreviews/trends/ta10_3.html