Since their introduction in the 1950s, Gibson's famous "Patent Applied For" humbucker pickups have been considered the ultimate pickup because of their smooth, velvety tone. The '57 Classic Plus uses slightly overwound coils, exactly like the original Patent Applied For humbuckers of the late 1950s that accidentally received a few additional turns of wire. The balanced coils of the '57 Classic Plus give them a warm, creamy tone. They are the perfect bridge-position companion to the '57 Classic, delivering just a little more of "the sweet stuff" without sacrificing any of the rich vintage tone.