Never underestimate the importance of star-quad cable! The geometric symmetry of this 4-wire structure provides immunity to magnetic interference. Electrostatic copper braid (or foil) shields block radio signals but they do not block magnetic fields! Magnetic fields are transmitted from power cords, power supplies, transformers, computers, AC power lines, lighting ballasts and the lines leading to and from SCR light dimmers. Star-quad cables are highly immune to these magnetic sources of interference, but traditional 2-wire cables have very little immunity. Tests show that star-quad cables reduce magnetic interference by as much as 25 dB (a factor of 18:1). These same tests show that Canare Star Quad L-4E6S cables are 10 dB ( a factor of 3:1) more effective than Mogami Neglex 2534 star-quad cables. We suspect that this difference is due to the accuracy of the 4-wire geometry in the CanareL-4E6S cable. Insist on the best star-quad cable, Canare L-4E6S, and eliminate magnetic interference problems!