
We believe in giving high-performance audio enthusiasts the purest headphone listening experience possible, even when their surroundings are far from perfect. The closed-back HD 620S caters to this audience by providing distraction-free listening without compromising on natural presentation. The reference-grade 42mm transducer and ultra-light 150-ohm aluminum voice coil deliver exceptional impulse response, bringing the listener to the front row of their music. Where many closed headphones struggle, the HD 620 excels, preserving the detailed, smooth sound the 600 series is known for while providing expansive, panoramic imaging. To mimic the presentation of loudspeakers, the HD 620S features angled transducers nestled in a remarkably open baffle. Even in complex music, bass, mids, and vocals are delightfully layered with distinct instrumentation and nuance. The steel-reinforced headband sliders and earcup covers ensure long-term durability while reducing unwanted resonances, all in a lightweight chassis designed for all-day use. Supple artificial leather earpads offer both a comfortable touch and superb acoustic isolation. The HD 620S includes a detachable 1.8 m twist-lock cable with a 3.5 mm plug and a 6.3 mm adapter. It's also upgradeable to an optional balanced cable with a 4.4 mm plug, seamlessly integrating into high-performance audiophile setups of all kinds.
Q: What is the design of the Sennheiser headphones?
A: The Sennheiser HD 620S headphones have a closed-back design.
Q: What is the size of the transducers in these headphones?
A: These headphones feature 42mm transducers.
Q: Do these Sennheiser headphones offer sound isolation?
A: Yes, the closed-back design of these headphones provides sound isolation for distraction-free listening.
Q: What is the impedance of the voice coil in these headphones?
A: The voice coil has an impedance of 150 ohms.
Q: How do these headphones provide a speaker-like experience?
A: The angled drivers in the headphones create a panoramic soundstage, which is unusual for closed-back headphones, giving a speaker-like experience.
Q: What is the frequency range of these headphones?
A: These headphones have a frequency range of 6 Hz to 30,000 Hz.

We believe in giving high-performance audio enthusiasts the purest headphone listening experience possible, even when their surroundings are far from perfect. The closed-back HD 620S caters to this audience by providing distraction-free listening without compromising on natural presentation. The reference-grade 42mm transducer and ultra-light 150-ohm aluminum voice coil deliver exceptional impulse response, bringing the listener to the front row of their music. Where many closed headphones struggle, the HD 620 excels, preserving the detailed, smooth sound the 600 series is known for while providing expansive, panoramic imaging. To mimic the presentation of loudspeakers, the HD 620S features angled transducers nestled in a remarkably open baffle. Even in complex music, bass, mids, and vocals are delightfully layered with distinct instrumentation and nuance. The steel-reinforced headband sliders and earcup covers ensure long-term durability while reducing unwanted resonances, all in a lightweight chassis designed for all-day use. Supple artificial leather earpads offer both a comfortable touch and superb acoustic isolation. The HD 620S includes a detachable 1.8 m twist-lock cable with a 3.5 mm plug and a 6.3 mm adapter. It's also upgradeable to an optional balanced cable with a 4.4 mm plug, seamlessly integrating into high-performance audiophile setups of all kinds.

Despite the HD 660S’s standing as one of the world’s popular audiophile headphones, some customers nevertheless wanted one very specific enhancement: even deeper bass. Because whether it’s a thunderous crescendo of timpani or the pulsating beat of electronic dance music, there is nothing like accurate, powerful sub bass to infuse your listening with drama. Audiophiles—and anyone looking for comfortable, non-fatiguing, high-end headphones—can now get even more impact and emotion from the HD 660S2. The headphone’s warm, relaxed tone is reflected by their timeless styling with elegant bronze accents. With its open-back design and outstanding comfort, the HD 660S2 is also destined to be a favorite for long listening sessions. This version builds on all the strengths of its formidable predecessor. The same world-class precision and resolution still let you pick out individual instruments like with no other headphone. Or experience the joy of discovering sonic details in recordings you’ve known for years—now underscored with more and deeper low end. Indeed, the standard-setter for extended listening has now become the standard-setter for extended bass as well. Enhancing this heralded audio design without detracting from its many strengths was, however, a daunting task. So, our engineers set out to systematically identify and exploit every opportunity in their quest to improve on the acclaimed HD 660S design. We adjusted the compliance of the surround, for instance, dropping the resonance frequency to 70 Hz. Considerable effort went into optimizing the airflow around the transducer. The coil in the HD 660S2 has also been revised to match the legendary HD 600 & 650, resulting in an impedance of 300 ohms. The coil offers a high magnetic force and electrical damping for a clean impulse response. It also increases sensitivity over the entire frequency spectrum by using the magnet’s air gap more efficiently. Taken together, these efforts and more have paid off in spades. Sound pressure at the lowest octaves has doubled. Now, you can feel the music more than ever before—with all the depth and weight that ultra-low frequencies invoke. The lowest A on the piano (27.5 Hz) or the pounding root note of a bass drum (45-60 Hz) are just as big, expansive, and imposing as if they were live. The unique combination of impactful bass combined with the warm tuning and smooth treble will be a revelation for audiophile listeners. It’s an even better way to lose yourself in comfortable, non-fatiguing, high-end sound—while feeling its full low-end power.

The HD 560S indulges the audiophile evaluating their music’s entire journey through the audio path. With linear acoustics and exceptional low-frequency performance the HD 560S was crafted for the analytical audio enthusiast. This open-back headphone is tuned to reveal every detail in your music without sacrificing the gratifying bass response. When combined with its ultralight chassis and luxurious comfort, it’s a breakthrough value in reference monitoring.

The HD 600 is the audio purist’s choice for reference playback. An instrument of Sennheiser’s passion for perfect sound, it is globally recognised as the standard for analytical high-fidelity listening - even 20-plus years after its release. The foundation of the extraordinarily clear sound of the HD 600 is its’ open acoustic design and the revolutionary transducer, which has been computer-optimized to reduce partial vibrations, which are responsible for a multitude of distortions.
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Customers highly value the Sennheiser HD 620S Headphones for their exceptional sound quality, with deep bass and clear highs. The noise cancellation is also highly regarded for its effectiveness in blocking out background noise. The build quality is generally considered good, and the soundstage is praised for its width, even in comparison to more expensive headphones.
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Huge upgrade from my Beats Studio Pro wireless headphones. With these I am able to listen to non-compressed lossless music. I did find that these headphones need a bit more power to take advantage of their drivers so I paired them with an iFi Go Bar DAC/Amp.
Posted by TexHAMBone
There are the closed-backs I've been looking for! I tried the Austrian Audio Hi-X60s and those were great... Until the pieces of plastic that attach the headband to the earcups disintegrated. Next I tried the Sony MDR-M1 and those were great too. Sort of. I had an issue with the stock pads letting the plastic cage around the driver touch my left ear. Fine for a little bit but any extended listening made my ear sore. Then comes these: Perfect! Earcups are super deep and the pads are plush and seal wonderfully even around glasses. The headband design looks the same as on the HD 600 and those have lasted decades. They have a nice weight to them and sound incredible. Sure the sound isn't "flat" but it's pretty darn good and amazing for the price. Oh and they're dummy comfortable for me. I have no issues wearing these all day at work. And they're pretty good for that! While the noise isolation doesn't match any ANC headphones it is really good for a passive pair. Plenty to dull the drone of the office and construction on the floor above. So, yeah, if you want a pair of lovely sounding headphones, that seal pretty well and have good noise isolation, feel quality and durable, then these are the cans for you.
Posted by oats
I purchased these headphones as an additional pair to use for computer and musical purposes. My other headphones are a Sony MDR-V600. I can say that the new headphones and my old pair are exactly alike. The sound quality and the interchangeable headphone jack is the same. The lager jack screws on to the small jack just like my other headphones. The new pair of headphones really do hug tight and comfortable to the ears. I would recommend these headphones.
Posted by Abc123