HiFiMAN HE-R9 Dynamic Closed Over-Ear Headphones with Topology Diaphragm & Bluemini R2R DAC Bluetooth Adapter/Receiver (Wireless)

Best sounding dynamic drivers: high sensitivity thanks to HIFIMAN's use of a rare-earth magnet; advanced voice coil; topology diaphragm for detailed high frequency response up to 35 kHz. The "Topology Diaphragm" refers to the diaphragm with a special nano particle coating on its surface. Through careful control of the surface structure of the diaphragm, different acoustic performances can be achieved, which were previously not achieved. Bluemini R2R (users can buy it separately or it comes with the wireless HE-R9 version): R2R structured Bluetooth DAC and amplifier; Small but powerful: HYMALAYA MODUL, Hifiman custom DAC; Ultra small, extremely efficient in energy consumption, exceptionally high resolution wireless audio sound. Elegance exterior, interior thickness: the outside of the headband is covered with high quality leather, which gives it a soft and elegant look. Inside there is high quality memory foam selected to achieve a comfortable fit and elasticity. The headband frame itself is made of solid steel. The structure is both light and strong, robust yet delicate, and is designed to convey details and musicality that are second to none on the market. LARGE EARCUPS FOR SUPERIOR ACOUSTIC - The crimson red ear cups are large and offer an internal space that contributes to a remarkable spatial sound volume and provides the powerful driver with the necessary leeway to perform its best. Cable Connections - Dual Compatibility Mode: The female can accommodate both single-sided unbalanced 3.5mm cables and single-sided 3.5mm balanced cables (left female). The Bluemini R2R dongle (sold separately) can be easily connected to the left socket.