Here is more patent and trade marked info about Tara lab's conductor's, Why Rectangular?
Our patented RSC conductors have become the definitive technology in high-end audio cables. The rectangular shape offers a unique advantage over round conductors. They have the necessary mass for solid bass, yet are thin enough for a coherent reproduction of mid-range and high frequencies. The RSC is not subject to the same high frequency losses that hamper traditional round conductors. To further understand the principle behind RSC technology, it is necessary to understand a phenomenon known as "skin effect" This principle states that in a round conductor, higher frequencies will tend to travel towards the outside (or skin) of the conductor, while lower frequencies will travel closer to the center of the conductor. The larger the diameter of a round conductor, the worse the effect will be, resulting in a significant roll-off of high frequencies in large gauge conductors. Because of its rectangular cross section, an RSC conductor essentially has no center like a round conductor. Therefore it does not suffer the same high frequency losses.
Our patented RSC conductors have become the definitive technology in high-end audio cables. The rectangular shape offers a unique advantage over round conductors. They have the necessary mass for solid bass, yet are thin enough for a coherent reproduction of mid-range and high frequencies. The RSC is not subject to the same high frequency losses that hamper traditional round conductors. To further understand the principle behind RSC technology, it is necessary to understand a phenomenon known as "skin effect" This principle states that in a round conductor, higher frequencies will tend to travel towards the outside (or skin) of the conductor, while lower frequencies will travel closer to the center of the conductor. The larger the diameter of a round conductor, the worse the effect will be, resulting in a significant roll-off of high frequencies in large gauge conductors. Because of its rectangular cross section, an RSC conductor essentially has no center like a round conductor. Therefore it does not suffer the same high frequency losses.