The Jantzen 15 gauge air core inductors offer a lower DCR alternative to the other Jantzen lines. They feature the same quality construction including high-purity copper wire wound to a +/- 3% tolerance, and the special Jantzen high-temperature baking process that eliminates the possibility of FM distortion. The perfect layer air core construction improves heat dissipation while eliminating hysteresis and any type of saturation distortion.