Sennheiser HD 620S Closed-Back Headphones Soundstage Closed-back headphones often sacrifice soundstage for isolation. However, the HD 620S shatters this compromise. Sennheiser engineers have achieved a remarkably open sonic presentation. Consequently, you experience a wide, spacious soundstage usually reserved for open-back designs. This closed dynamic model now delivers exquisite, speaker-like imaging. Furthermore, listeners enjoy their most intimate listening sessions privately. We eliminate distraction, yet the expansive, spacious sound remains. Precision At the heart of this performance lies a reference-grade, 42 millimetre angled transducer. Specifically, a 38 millimetre diaphragm offers exceptional impulse response. Furthermore, an ultra-light, 150-ohm aluminium voice coil guarantees enhanced clarity. This precision ensures audio reproduction remains accurate. It delivers natural detail retrieval across the wide frequency range of 6 Hz to 30,000 Hz. The total harmonic distortion stays impressively below 0.05%. Therefore, expect nothing less than pristine, reference-level audio dynamics. Ergonomics All-day comfort is critical for true audiophile dedication. Indeed, Sennheiser constructed the lightweight chassis on the HD 620S for long-term wearability. The design features robust, steel-reinforced headband sliders and ear cup covers. Moreover, the supple artificial leather earpads include internal venting. This venting ensures supreme comfort during hours of intimate listening. Consequently, the durable construction guarantees this luxurious personal oasis lasts for years to come. This makes the HD 620S a truly marvellous investment. Specifications Table Feature Detail Acoustic Principle Dynamic, Closed-back Transducer Size 42 mm (with 38 mm diaphragm) Frequency Response 6 Hz–30,000 Hz Nominal Impedance 150 Ω Sound Pressure Level (SPL) 105 dB (1 kHz / 1 Vrms) Total Harmonic Distortion (THD) $ Ear Coupling Around ear (Circumaural) Ear Pad Material Artificial leather on Polyurethane basis Cable Length 1.8 m (Detachable) Weight (without cable) 326 g Connectivity 3.5 mm stereo plug (includes 3.5 to 6.3 mm adapter)
