![Amazon.com: Drop + HIFIMAN HE4XX Planar Magnetic Over-ear Open-back Headphones,midnight-blue : Electronics Amazon.com: Drop + HIFIMAN HE4XX Planar Magnetic Over-ear Open-back Headphones,midnight-blue : Electronics](https://m.media-amazon.com/images/S/aplus-media/sc/9c0e25f1-576a-487a-9325-9132108b4bd0.__CR0,0,970,600_PT0_SX970_V1___.jpg)
Amazon.com: Drop + HIFIMAN HE4XX Planar Magnetic Over-ear Open-back Headphones,midnight-blue : Electronics
![Amazon.com: Drop + HIFIMAN HE4XX Planar Magnetic Over-ear Open-back Headphones,midnight-blue : Electronics Amazon.com: Drop + HIFIMAN HE4XX Planar Magnetic Over-ear Open-back Headphones,midnight-blue : Electronics](https://m.media-amazon.com/images/I/81kXlGbKjBL._AC_UF350,350_QL80_.jpg)
Amazon.com: Drop + HIFIMAN HE4XX Planar Magnetic Over-ear Open-back Headphones,midnight-blue : Electronics
![Amazon.com: DROP + HIFIMAN HE-X4 Planar Magnetic Over-Ear & Open-Back Headphones with Detachable Cables, High Sensitivity, Easy to Drive, Midnight-Blue : Electronics Amazon.com: DROP + HIFIMAN HE-X4 Planar Magnetic Over-Ear & Open-Back Headphones with Detachable Cables, High Sensitivity, Easy to Drive, Midnight-Blue : Electronics](https://m.media-amazon.com/images/I/616+Zp0vWdL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: DROP + HIFIMAN HE-X4 Planar Magnetic Over-Ear & Open-Back Headphones with Detachable Cables, High Sensitivity, Easy to Drive, Midnight-Blue : Electronics
![Archimago's Musings: REVIEW / MEASUREMENTS: (Mass)Drop + HiFiMan HE-4XX Planar Magnetic Headphones (with Brainwavz XL Round Hybrid earpads). Maintenance if the earcup detaches. Archimago's Musings: REVIEW / MEASUREMENTS: (Mass)Drop + HiFiMan HE-4XX Planar Magnetic Headphones (with Brainwavz XL Round Hybrid earpads). Maintenance if the earcup detaches.](https://1.bp.blogspot.com/-6_kAy2rjSbo/YJyHFgJ7b9I/AAAAAAAAa-o/A1LkDCf6x7Yhp79RzbNp58PBnIumqH5ogCLcBGAsYHQ/s1600/HE-4XX%2BDriver.jpg)
Archimago's Musings: REVIEW / MEASUREMENTS: (Mass)Drop + HiFiMan HE-4XX Planar Magnetic Headphones (with Brainwavz XL Round Hybrid earpads). Maintenance if the earcup detaches.
![Amazon.com: Drop + HIFIMAN HE4XX Planar Magnetic Over-ear Open-back Headphones,midnight-blue : Electronics Amazon.com: Drop + HIFIMAN HE4XX Planar Magnetic Over-ear Open-back Headphones,midnight-blue : Electronics](https://m.media-amazon.com/images/I/713a0a+nm7L.jpg)