The HD 280 Pro is Sennheiser's most significant closed, around-the-ear headphone to be introduced in years. Designed to exceed the demands of the professional environment, the HD 280 Pro boasts extremely robust construction combined with the sound quality, modular design and aggressive noise isolation the necessary in the field. The unique collapsible design, combined with swiveling ear cups, offers maximum flexibility in any application.
| Wearing style | Headband |
| Frequency response (Headphones) | 8 - 25000 Hz |
| Sound pressure level (SPL) | 113 dB |
| THD, total harmonic distortion | 0,1 % |
| Contact pressure | 6 N |
| Ear coupling | circumaural |
| Jack plug | 3,5 / 6,3 mm stereo |
| Connection cable | Coiled Cable (min. 1.3m / max. 3m) |
| Transducer principle | dynamic, closed |
| Weight | 285 g |
| Nominal impedance | 64 O |
| Load rating | 500 mW |