Editorial Review The Seymour Duncan STR-3 Quarter Pound is a high-output true single-coil Telecaster pickup for hard-hitting tones. Great for classic rock, jazz-rock fusion, heavy rock and aggressive instrumental rock.This brute has enough power to compete with humbuckers and hot P-90s. The stronger magnetic field of the quarter-inch diameter pole pieces increases the output and allows use of a special coil winding. It keeps the high-end definition for great treble bite and a full, powerful midrange. It's especially useful for overdriven tones. The STR-3 rhythm pickup matches the lead model in tone and output, but uses 3/16 pole pieces and comes with a chrome-plated brass cover.