It is a multi-functional copper speaker wire offered in a 4.0 mm² (12 AWG) size. The enlarged cross-section and the advanced Multiwire weave arrangement of the conductors with their precise inter-wire tension and strand conformity minimize the overall active resistance and ensure efficient amplifier-speaker matching regardless of their design ethos and specification. The major evolution is the enhanced 2-layer CAFPE® conductor insulation. The improved overlaying process and the extended inner air-foamed PE layer result in a decreased relative permittivity and signal energy loss. The common streamlined easily bisectable jacket executed of Russian-made low-loss SPVC simplifies concealed in-wall wiring. The new Special 4.0 Speaker Wire is recommended for various Home Audio & AV entertainment applications, where full frequency range presentation, perfect LF definition and stunning dynamic expression are at a premium. The Special 4.0 Speaker Wire is capable of extracting amazingly taut and well-articulated bass from the lowest bottom. The Special 4.0 Speaker Wire is capable of extracting amazingly taut and well-articulated bass from the lowest bottom. Optional termination kits of dedicated spade & banana connectors are available at a very competitive price.