Features Solid PSC+ Conductors 72V Dielectric-Bias System (DBS) Double Star-Quad Geometry Multi-Layer Noise-Dissipation System (NDS) Description Product Description Superior geometry, magnetic autonomy of each quad-conductor section, Perfect-Surface metal technology, conductor-size optimization (AQ's Spread-Spectrum Technology), etc. - are the fundamentals of Castle Rock. Castle Rock employs AQ's best copper conductor metal (Perfect-Surface Copper+), AudioQuest's DBS (Dielectric-Bias System) and NDS (Noise-Dissipation System). The addition of the sleek new "Hanging-Silver" 1000 Series Multi-Spades and Bananas,originally developed for the WEL Signature Series speaker cables, these plugs are made using a "hanging silver over pure red-copper" process in which the spades and bananas are submerged ("hung") into a vat of extreme-purity silver, resulting in a very thick direct-silver plate. No intermediary performance-degrading materials (such as nickel or alloy) are used. Also new to Castle Rock is a more-neatly-sculpted "breakout" (the covering where the cable separates into red and black legs), which is now made of a synthetic non-magnetic polymer, rather than metal because speaker cables and AC power cables carry large magnetic fields which interact with any metal "collar" around the cable. Eliminating metal in the breakouts is another significant (and clearly audible) step forward in the goal of eliminating distortion and making the cable sonically "invisible."