Hifiman HE-R9 Dynamic Closed-Back Headphones (Open Box) Version:wired Cut aluminum is used for

Cut aluminum is used for portions to which force is applied

XSpace is the iFi analogue signal improvement circuitry to get that ‘music’ back outside of your head for much better headphone enjoyment

1 - Detachable nozzle kit

the PSB earphones will notify the user via voice prompts when they are paired with a device or running low on battery power

very comfortable to wear

Hifiman HE-R9 Dynamic Closed-Back Headphones (Open Box) Version:wired Cut aluminum is used forBest sounding Dynamic Drivers High sensitivity thanks to HIFIMAN's use of a rare earth magnet Topology diaphragm for detailed high frequency response to 35kHz Advanced voice coil HIFIMAN Topology Diaphragm The "Topology Diaphragm refers to a diaphragm featuring a special Nano particle coating applied to its surface. The result is a more natural and detailed sound than what is typically achieved in True Wireless earphones. The idea behind the new