Originally known as the Gretsch-DeArmond Fidelatone, and pre-dating the Gretsch FilterTron humbucking pickups, the DynaSonic single-coil pickup has been a Gretsch standard since the late 40s. Being one of the first pickups to offer individually adjustable pole-pieces, DynaSonic pickups feature shimmering highs and a rich, full bass response. This is a Gretsch Dynasonic pickup, in chrome, for bridge position.