Monsoon XTRM uses many of the same ingredients and technologies found in Monsoon—a carefully finessed combination of Perfect-Surface Copper (PSC ) and long-grain Copper (LGC) Conductors, RF/ND-Tech, and ZERO-Tech—but surpasses its namesake model with our best AC plugs, featuring Hanging-Silver over Red and Beryllium Coppers, for lower distortion and improved dissipation of high-frequency noise. This is Monsoon taken to the XTRM.