Sennheiser HD 620S Headphones review

This is the Ultimate Open-Back Headphone Experience

Sennheiser HD 620S Headphones review 1
Image credit: Sennheiser

Introduction

When it comes to high-fidelity audio, Sennheiser is a name that stands out. Known for delivering some of the best headphones on the market, Sennheiser has gained a reputation for quality and innovation. The Sennheiser HD 620S headphones is a high-end, open-back headphone designed for audiophiles who crave precise and detailed sound. It promises an exceptional listening experience with its premium build, ergonomic design, and superior audio quality. But does it truly live up to the hype? In this detailed review, we’ll break down everything you need to know about the Sennheiser HD 620S, from its design and key features to performance and whether it’s worth your money.

Design and Features

The design of the Sennheiser HD 620S is minimalist yet elegant. These headphones don’t rely on flashy aesthetics but instead focus on a clean and sophisticated look. The body is constructed from high-quality materials that are both lightweight and durable. The matte black finish adds a touch of class, making it suitable for use both at home and in professional settings.

One of the key features of the HD 620S is its open-back design. This design is intended to provide a more natural and spacious soundstage, which is ideal for critical listening and enjoying music in a quiet environment. However, it also means that these headphones are not suitable for noisy environments or on-the-go use, as they do not block external noise.

The ear cups are large and oval-shaped, designed to cover the ears completely without exerting too much pressure. The padding is made from soft, breathable materials that provide a comfortable fit, even during extended listening sessions. The headband is adjustable and cushioned, allowing for a customized fit that evenly distributes weight across the head.

Additionally, the Sennheiser HD 620S comes with a detachable cable that connects to the headphones using a sturdy 2.5mm connector. The cable is relatively long, making it convenient for use with home audio systems, and it’s designed to minimize tangling and signal loss. While the HD 620S does not come with a microphone or in-line controls, its focus is clearly on delivering the best possible audio quality.

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Image credit: Sennheiser

Specifications

SpecificationsDetails
TypeOpen-back, over-ear
Frequency Response10 Hz – 41,000 Hz
Impedance300 ohms
Sensitivity104 dB
Weight260 grams (without cable)
Cable Length3 meters, detachable
Connector6.3mm stereo plug, 3.5mm adapter included

Key Features

The Sennheiser HD 620S comes packed with features designed to deliver an unparalleled audio experience. Let’s explore some of the standout elements that make these headphones a top choice for audiophiles.

Open-Back Design for Natural Sound

One of the defining characteristics of the HD 620S is its open-back design. This design choice creates a wider soundstage, making it feel as if the music is surrounding you rather than being confined within your head. The open-back design allows air and sound to pass freely, reducing pressure and delivering a more natural sound. However, it also means that sound leakage can be an issue, and these headphones may not be ideal for use in shared spaces or while commuting.

Advanced Driver Technology

The HD 620S features Sennheiser’s proprietary transducer technology, which is engineered to deliver a high level of accuracy and clarity. The drivers are carefully tuned to reproduce sound with a wide frequency response, capturing every detail from the deepest bass to the highest treble. This makes the headphones particularly suited for critical listening, where every nuance of the sound is essential.

High Impedance for Better Audio Quality

With an impedance of 300 ohms, the HD 620S is designed to be used with high-quality audio sources and amplifiers. This high impedance ensures that the headphones can handle more power without distortion, resulting in cleaner, more precise audio. While this does mean that a dedicated amplifier is recommended for the best performance, it ensures that the HD 620S delivers a premium listening experience.

Ergonomic Comfort

Comfort is a key consideration for any high-end headphone, and the HD 620S does not disappoint. The large ear cups are designed to fit around the ears comfortably, and the soft padding ensures a snug fit without causing discomfort during long listening sessions. The headband is also well-padded and adjustable, allowing for a custom fit that suits different head sizes.

Detachable Cable with Durable Design

The HD 620S features a detachable cable that is designed to reduce tangling and signal loss. The 3-meter length provides ample reach for most home setups, and the 2.5mm connector ensures a secure fit with the headphones. The cable terminates in a 6.3mm stereo plug, but a 3.5mm adapter is also included, making it compatible with a wide range of audio devices.

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Image credit: Sennheiser

Performance

When it comes to performance, the Sennheiser HD 620S lives up to its reputation as a high-fidelity headphone. The sound signature is balanced and natural, with a focus on clarity and detail. The bass is tight and controlled, without overpowering the mids and highs. This makes the HD 620S ideal for a wide range of music genres, from classical and jazz to rock and electronic.

The midrange is where the HD 620S truly shines. Vocals and instruments are reproduced with stunning accuracy, and there is a sense of presence that brings the music to life. The high frequencies are crisp and clear, without being overly bright or harsh. This level of detail and precision makes the HD 620S an excellent choice for critical listening, as it reveals nuances in the music that may be missed with other headphones.

The soundstage is another standout feature of the HD 620S. Thanks to its open-back design, the headphones create a spacious and immersive listening experience. Instruments are well-separated, and there is a sense of depth that adds realism to the sound. This makes the HD 620S particularly well-suited for live recordings and orchestral music.

However, it’s important to note that the open-back design also has some drawbacks. Because the headphones do not block external noise, they are best used in quiet environments. Additionally, sound leakage can be an issue, so they may not be suitable for use in shared spaces.

Pros and Cons

Sennheiser HD 620S
Good Stuff Exceptional Sound Quality: Balanced, detailed sound with a wide frequency response. Comfortable Design: Lightweight and ergonomic for extended listening sessions. Spacious Soundstage: Open-back design provides a natural, immersive experience. Durable Build: High-quality materials and detachable cable for longevity. High Impedance: Suitable for use with high-quality audio sources and amplifiers.
Bad Stuff Not Suitable for Noisy Environments: Open-back design allows external noise in and sound leakage out. Requires Amplifier for Best Performance: High impedance may need an external amp for optimal sound. Limited Portability: Design is better suited for home use rather than on-the-go listening.

Latest Deals

The Sennheiser HD 620S headphones is currently available on Amazon with several deals and discounts. Depending on your location and time of purchase, you may find varying prices. Keep an eye out for special offers, bundle deals, and discounts that can help you save money on this premium headphone. Make sure to check the latest prices and deals to get the best value for your purchase.

Should You Buy It?

If you are an audiophile or someone who values high-fidelity sound, the Sennheiser HD 620S is a fantastic choice. The headphones offer a balanced and natural sound that is perfect for critical listening. The open-back design provides a spacious and immersive soundstage, making it ideal for genres that benefit from a sense of depth and realism, such as classical, jazz, and live recordings.

However, if you are looking for a headphone that you can use in noisy environments or while commuting, the HD 620S may not be the best option due to its open-back design. Additionally, if you do not have a dedicated amplifier, you may not experience the full potential of these headphones.

Overall, the Sennheiser HD 620S is a great investment for anyone who wants a high-quality headphone for home use and critical listening. The combination of exceptional sound quality, comfort, and build quality makes it a top contender in the high-end headphone market.

Final Thoughts

The Sennheiser HD 620S is a headphone that delivers on its promise of high-fidelity sound. With its open-back design, advanced driver technology, and ergonomic comfort, it offers an exceptional listening experience that is hard to match. While it may not be suitable for all situations, its strengths far outweigh its limitations, making it an excellent choice for audiophiles and music enthusiasts alike.

How We Test

To evaluate the Sennheiser HD 620S, we conducted a series of tests to assess its performance across various aspects, including sound quality, comfort, and build. Our testing process involved listening to a wide range of music genres, from classical and jazz to rock and electronic, to determine how well the headphones handle different types of audio. We also used high-resolution audio files to gauge the level of detail and clarity the HD 620S can produce.

Additionally, we tested the headphones with various audio sources, including high-end amplifiers, digital audio players, and smartphones, to check how they perform under different conditions. We paid close attention to comfort and fit during extended listening sessions to ensure that the headphones provide a pleasant experience without causing fatigue or discomfort. Lastly, we assessed the build quality, focusing on the materials used, the durability of the cable, and the overall construction to determine if the HD 620S can withstand regular use.

FAQs

Are the Sennheiser HD 620S headphones good for gaming?

The Sennheiser HD 620S can provide an excellent audio experience for gaming due to their clear soundstage and detailed sound reproduction. However, they lack a built-in microphone, so they are not ideal for multiplayer gaming where communication is key. Their open-back design also means they are best used in a quiet environment.

Do I need an amplifier for the Sennheiser HD 620S?

While you can use the HD 620S with standard audio devices, they have a high impedance of 300 ohms, which means they will perform best with a dedicated headphone amplifier. An amplifier will provide the necessary power to drive the headphones and bring out the full range of sound they are capable of producing.

Are these headphones comfortable for long listening sessions?

Yes, the Sennheiser HD 620S is designed for comfort. The large ear cups, soft padding, and adjustable headband ensure a comfortable fit, even during extended listening sessions. The lightweight design also helps reduce fatigue.

How do the Sennheiser HD 620S compare to other headphones in its price range?

The HD 620S competes well with other high-end headphones in its price range. It offers a unique combination of a natural, open-back soundstage and excellent clarity across the frequency spectrum. It is particularly suitable for audiophiles who prefer a balanced and detailed sound signature.

Can I use the Sennheiser HD 620S for travel or outdoor use?

The Sennheiser HD 620S is not ideal for travel or outdoor use due to its open-back design, which allows sound to pass in and out. This design choice means they do not provide noise isolation, making them less suitable for noisy environments or use on the go.