Gibson 57 Classic (Double Black, 2-conductor, Potted, 8k, Alnico 2) PickupGibson 57 Classic Double Black Overview Introduced in 1990, the Gibson 57 Classic was designed to faithfully recreate the tone and construction of late 50s Patent Applied For humbuckers. Built with Alnico 2 magnets and balanced coils, it delivers warm, full bodied tone with smooth highs, clear mids, and a tight, musical low end. With its even response and classic humbucker crunch, the 57 Classic works equally well in the neck or bridge position. The