description Revolutionary design injects tunable "negative hum" into the pickup circuit. Each unit is individually factory pre-tuned to offer the optimal traditional single coil sound with no hum. complete setup Available for bridge, middle and neck positions. guitars For all well-balanced instruments. Works equally well with maple and rosewood fingerboards. available mods RThree-conductor cable allows splitting for true single coil mode. When three STK-S4s are all split, the middle pickup is RW/RP allowing hum-cancellation when used with the neck or bridge pickup. players Nuno Bettencourt / Dramagods