Seymour Duncan 78 Model Humbucker Set, BlackBack in the late '70s, Seymour Duncan was approached with the task of rewinding and P. A. F. to be more pick sensitive and harmonically responsive. The Seymour Duncan '78 is equipped with an Alnico 2 magnet wound to the exact "hotter" specifications as the original P. A. F. rewind. With plenty of sensitivity for articulate playing, the '78 plays with heat in the very best way.