“The hi-fi community has clamored for a headphone with the best traits from our 600 series, yet isolates them from distractions at work, home, or in-between,” says Audiophile Product Manager Jermo Koehnke. “Not only does the HD 620S deliver on that promise, its immersive imaging and brilliant impulse response make it an exceptional listening experience for every situation where a higher level of performance matters.”
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. As the announcement describes, the design “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 aluminum 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.”
Independently of the drivers and the ambitions of the HD 620S’ response, any Sennheiser enthusiasts will note that the new model embraces the controversial modern, curved design that the German company originally used in its more affordable and recent professional headphones. Sonova (Sennheiser Hearing) goes as far as describing it as “an iconic chassis beloved by audiophiles, gamers and streamers alike for its long-term wearing comfort.” Although no one would argue about comfort, the aesthetics and the “plastic” look is certainly not associated with Sennheiser’s premium headphones. Certainly nothing that resembles the Sennheiser 660S2 headphones, and looking more like the HD 400 PRO Studio Headphones or the popular HD 560S.
This is even though the HD 620S features a metal-reinforced headband and earcup housings that not only feel great to the touch but also serve an acoustic purpose – the steel plate closing off the back volume is an efficient isolator that manages internal reflections. “The angled baffle is remarkably open to encourage the free movement of air, modeling the behavior 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 center of the action with impressive cue location, whether it is a rare live concert recording or massive online multiplayer showdown,” the announcement states.
“Open headphones are an audio purists’ favorite, however closed headphones are invaluable for listening when isolation from the world around the listener is essential. Audiophiles are accustomed to trading the natural response and wide imaging of open headphones in order to keep distractions at bay, or from disturbing roommates, spouses and coworkers. No doubt, the HD 620S is a breakthrough in real-world performance, offering the dramatic soundstage they want absent the fatiguing, boxy sound associated with sealed cans,” the company expands.
The HD 620S headphones come with a storage pouch with ample space for the 1.8 meter / 6 foot detachable cable that terminates to a single-ended 3.5mm stereo plug with an integrated locking screw for the included 6.3mm adapter. Available in Summer 2024, an optional balanced 4.4mm cable will let “audiophiles” connect these closed headphones to the growing range of expensive digital audio players supporting the popular connector. The connector in the HD 620S’ earcups shares the twist-and-lock single-sided design with other Sennheiser headphones, paving the way for plenty of aftermarket options including different lengths and an in-line microphone.
The new Sennheiser HD 620S closed headphones begin shipping June 6, 2024 with an MSRP of $349.99 USD.
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