`A new generation of tone, Yosemite J Bass pickups are designed for rich, articulate sound in every combination. These single-coil Jazz Bass® pickups offer authentic Fender tone—growling lows with open highs. Alnico 5 magnets and Formvar-coated wiring create an expressive, well-defined voice that’s highly musical and dynamic—it fits in the mix with ease—while shellac coating controls potentially runaway feedback without compromising response.