Immerse yourself in a high-fidelity, comfortable listening experience with the Fidelio X1 Headphones from Philips. Featuring powerful 50-millimeter drivers and open-back architecture, the Fidelio X1 is designed to provide natural sound that is detailed and precise. And with premium memory foam, velvet-wrapped earpads and a self-adjustable air hammock that provides a perfect fit, you'll be able to enjoy your favorite music for hours in comfort.<br><br>- Acoustic open-back architecture for sound clarity<br>- Powerful 50-millimeter neodymium drivers<br>- Pre-tilted drivers directly channel audio into your ears<br>- Memory foam earpads and breathable material for comfort<br>- Genuine calf leather headband and aluminum construction for durability<br><br><b>Open-Back Architecture for Smooth, Pristine Audio</b><br><br>Philips designed the Fidelio X1 Headphones with an acoustic open-back architecture that eliminates air pressure buildup behind the driver so the diaphragm can move freely for a This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-425-4804, indicating validated use in U.S.
government and defense logistics supply chains.
| material | STEEL OVERALL |
| first_end_style | CHAMFERED |
| pin_overall_length | 10.312 INCHES NOMINAL IN |
| first_hole_diameter | 0.406 INCHES NOMINAL IN |
| pin_overall_diameter | 1.2500 INCHES NOMINAL IN |
| second_hole_diameter | 0.406 INCHES NOMINAL IN |
| first_end_taper_angle | 45.0 DEGREES NOMINAL |
| first_end_taper_length | 0.094 INCHES NOMINAL IN |
| hole_arrangement_style | BOTH END DRILLED |
| second_end_relationship_with_first_end | IDENTICAL |
| center_to_center_distance_between_holes | 9.500 INCHES NOMINAL IN |
| distance_from_centerline_of_hole_to_end_of_pin | 0.406 INCHES NOMINAL IN |
| NSN | 5315-00-425-4804 |
| MATERIAL | STEEL OVERALL |
| DISTANCE FROM CENTERLINE OF HOLE TO END OF PIN | 0.406 INCHES NOMINAL IN |
| FIRST END TAPER LENGTH | 0.094 INCHES NOMINAL IN |
| FIRST END STYLE | CHAMFERED |
| HOLE ARRANGEMENT STYLE | BOTH END DRILLED |
| SECOND HOLE DIAMETER | 0.406 INCHES NOMINAL IN |
| FIRST END TAPER ANGLE | 45.0 DEGREES NOMINAL |
| SECOND END RELATIONSHIP WITH FIRST END | IDENTICAL |
| PIN OVERALL DIAMETER | 1.2500 INCHES NOMINAL IN |
| PIN OVERALL LENGTH | 10.312 INCHES NOMINAL IN |