FiiO FT1 Pro Planar Over-Ear Headphones95x86mm FiiO developed planar driver The FT1 Pro is equipped with FIIOs second generation, self developed planar driver technology. The planar driver has been designed from the ground up by FIIO, from the diaphragm, to the patented dual coating, to the conductive trace width, to the fine tuning of the magnetic circuit, and even the standardized bracket fixings all to ensure a true quality driver. Compared to typical off the shelf drivers, the self