Furutech’s beautifully finished, beautiful sounding Torque Guard Binding Posts are the result of meticulous engineering and careful audition of various suitable materials. The FT-818 features an α (Alpha) pure copper conductors for minimal impedance and substantially-built extremely nonresonant carbon fiber, nonmagnetic stainless steel and eutectic copper alloy housings. The unique patent-pending Torque Guard technology, which prevents over-tightening, allows each post to be evenly tightened for improved channel balance and signal transfer.