FiiO JD7 Review – Harman King FiiO’s new JD7 features a single 10mm dynamic driver with an internal and external magnetic circuit setup that dramatically improves the magnetic flux density so that the driver can push more air for a more effortless sound. The JD7’s driver is put into a dual-layer housing where each layer features a damping system to result in a quicker-sounding driver. The JD7 ear units are made of 316L stainless steel. This results in a comfortable … Continue reading FiiO JD7 Review