Unlike other single-coil P-90s, the Seymour Duncan P-90 Stack is a true humbucker in a P-90 package. Using Duncan's patented Stack® technology together with adjustable pole pieces, the guitarist can now obtain great P-90 tone in a studio-quiet pickup. The bridge model has an even response with extra added punch for lead work. The neck model is designed so that its volume is balanced with the bridge model and its tone has just the right amount of bass.