The Sennheiser HD 620S is closed yet open to all sound experiences.
Sennheiser's HD 620S aims to impress audiophiles with superb sound quality even in a closed headphone design, boasting the same exceptional sound as premium open headsets. This affordable option can cater to various situations - home, travel, and gaming.
Bluetooth convenience may be popular, but audiophiles favor wire-connected headphones for pristine audio quality. Open headsets with airy cushions offer comfort and an expansive audio experience, but they allow unwanted noise in and out. The HD 620S seeks to balance these factors with its closed design and efficient passive noise isolation.
Comparatively affordable
The HD 620S retails for €350, a hefty sum. Fancier headphones typically cost much more; for instance, the similarly closed Sennheiser HD 820 began at €2,000. The HD 620S draws inspiration from its older sibling, the HD 600, which debuted over 20 years ago and retails for €390.
The HD 620S adopts the design of its predecessors, primarily built with plastic except for the steel bracket and steel-reinforced earcup covers. The construction is sturdy and exudes quality. It exhibits a firm grip and weighs 326 grams, yet feels snug thanks to its well-padded cushions.
The inclusions are minimal: a fabric travel case and a 1.8-meter cable with a 3.5-to-6.3-millimeter adapter. A USB-C adapter is absent, necessitating a separate purchase to connect with most modern smartphones.
Excellent noise suppression
Shutting out external noise isn't as sophisticated as active noise cancellation (ANC), but the HD 620S remains a formidable contender in terms of acoustic isolation. Sennheiser credits the steel plates in the earcup covers for this feat. In real-life scenarios, music can be enjoyed uninterrupted.
The music reproduction is handled by 42mm drivers with 38mm membrane diameter. These drivers are not directly aimed at the ears, but angled-, promising a vast, 3D-like soundstage. The bass delivers satisfactory thump and pressure, working in harmony with the precise mid tones. The highs are transparent, adding clarity to the mix.
The HD 620S's signature neutral tuning - often criticized for being overly analytical - hits the sweet spot by providing a detailed audio experience without veering into fatigue. An ideal match for jazz, the headphones also shine in every other music style.
Gamers will be thrilled by the HD 620S's spatial accuracy, enhancing the eerie ambiance in "Resident Evil 4" or delivering explosive sound effects in "Star Wars Jedi: Survivor".
Final Thoughts
As promised, the Sennheiser HD 620S serves as a versatile option that delivers premium audio quality, whether in a quiet room or on a crowded street. It may not excel in some aspects, but it outperforms competitors with better sound quality at the same price point.
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The Sennheiser HD 620S undergoes rigorous audio tests to ensure its sound quality, including audio tests with headphones and technology tests for noise isolation. Audiophiles might be interested in conducting their own audio tests with the HD 620S, using headphones for a precise listening experience.
