At $899 Fang Bian's latest planar-magnetic headphone design slots between his present $699 HE-5LE and $1.199 HE-6 flagship. "It uses bigger and more complicated magnets to increase sensitivity over the HE-5LE plus a different diaphragm to improve the midrange. Sensitivity is 89dB, impedance 38 ohms. Our portable players can drive it well. The magnets are actually the same as on the HE-6. The diaphragm was modified however to provide better vocals and bass. The voice coil traces are coiled aluminum and we apply a different treatment to the surface of the HE-500's diaphragm, making it different from any of our other headphones including the HE-5, HE-5LE and HE-4."