The Seymour Duncan SHPR-1 P-Rails Neck Humbucker in black. Application Ground breaking, patent pending design allows a full-size humbucker to split to either a “real deal” P-90 or a traditional single coil. Perfect for a wide variety of styles including country, pop, surf, jazz, blues, classic rock, and heavy rock. Description Until now, if you wanted humbucker, P-90, and vintage Strat® tones, you’d have to haul three guitars to the gig. Enter P-Rails™. It’s a full-size humbucker that splits to either a full-size P-90 or a special Alnico-powered single-coil Rail pickup. The humbucker sound is full and expansive, owing to the mis-matched coil configuration. The P-90 is a super fat. And the Rail coils, when used together, sound like the “2” and “4” positions in a great Strat. Complete setup P-Rails are best used in a matched neck and bridge set. To get both humbucker and P-90 tones, use a two-way switch (push-pull or mini-toggle). To have humbucker and P-90 tones and bring in the added dimension of the single-coil Rail, use a three-way switch (DPDT on-off-on). guitars P-Rails can be used in any guitar set up for a traditional humbucker or Trembucker. A single P-Rails will bring added dimension to your guitar. However, to optimize P-Rails’ unique splitting capabilities and get the best single-coil Rails tones, use a neck and bridge set. Available mods Normally, in humbucking mode, P-Rails are wired in series, for a high-output sound that works great for classic rock and heavier tones. However, when wired in parallel, the coil mismatch produces a very usable P.A.F.-style humbucker tone with less phase cancellation associated with standard parallel wired humbuckers, complete with present upper-mid “bloom” and pronounced string articulation. Players Peter Stroud / Sheryl Crow Band, Blues Saraceno, Eric Miker / Decemberadio Specifications Mode DC Resistance Resonant Peak Neck     Humbucking 12.87KOhm 4.6KHz P-90 7.25KOhm 3.6KHz Rails 5.60KOhm 7.0KHz       Bridge     Humbucking 18.80KOhm 3.0KHz P-90 10.20KOhm 3.1KHz Rails 8.56KOhm 6.0KHz   Magnet: two Alnico 5 bars Cable: four-conductor