Seymour Duncan STK-S4 Stack Plus Seymour Duncan STK-S4 Stack Plus Description: Application: New patent applied for design to remove hum and preserve traditional single coil tone. Recommended for country, pop, surf, rockabilly, blues, ska and classic rock. 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: Three-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 Get your Seymour Duncan STK-S4 Stack Plus today!