Distraction Off. Open sound on.
The new HD 620S breaks from the pack with contemporary tuning and soundstage that defy the closed headphone category.
At the heart of the HD 620S is a custom-tuned 42mm dynamic transducer made at the brand’s state-of-the-art Tullamore, Ireland transducer plant. It carries forward the smooth and effortless sound found in the open-back 600 family with a modern, airy signature that balances honesty with deep and articulate bass. Thanks to a high damping factor, the 150-ohm aluminium voice coil excels at speedy transients and well-defined instrument tails for punchy dynamics across the entire frequency spectrum—a boon for audiophiles and passionate gamers trying to consume as much detail as possible in a given moment.
Situated in an iconic chassis beloved by audiophiles, gamers and streamers alike for its long-term wearing comfort, the HD 620S elicits a sense of confidence while providing an instant sweet spot. Metal appointments not only feel great to the touch but serve an acoustic purpose as well–the steel plate closing off the back volume is an efficient isolator that manages the internal reflections that cloud the purity of an acoustic signal within. The angled baffle is remarkably open to encourage the free movement of air, modelling the behaviour of open-back transducers while recreating the triangular imaging of a great loudspeaker setup in an expertly tuned room. This immersive presentation drops the listener into the centre of the action with impressive cue location, whether it is a rare live concert recording or massive online multiplayer showdown.
SPECIFICATIONS
| Wearing style | Wired headband |
| Ear coupling | Over-ear (Circumaural) |
| Ear pad material | Artificial leather |
| Acoustic principle | Closed-back |
| Transducer principle | Dynamic (single driver) |
| Transducer size | 42 mm with a 38 mm diaphragm |
| Frequency response | 6 Hz - 30,000 Hz |
| Impedance | 150 Ω |
| Sound Pressure Level (SPL) | 105 dB (1 kHz / 1 Vrms) |
| Total Harmonic Distortion (THD) | <0.05% (1 kHz / 90 dB SPL) |
| Magnetic field strength | 6.25mT |