Sennheiser HD 660S2 Wired Audiophile Stereo Headphones: Enhanced Bass for a More Immersive Sound

Published on May 11, 2023, 4:23 p.m.

The Sennheiser HD 660S2 represents the latest addition to the acclaimed HD series headphones line-up. Building upon the naturally warm sound signature, the HD 660S2 further enhances the bass performance for a more impactful and immersive listening experience.

Overview

Sennheiser is known for manufacturing some of the best audio equipment in the industry, including the renowned HD series audiophile headphones. The new Sennheiser HD 660S2 Wired Audiophile Stereo Headphones model aims to deliver an intimate and detailed sound with extended low-end power.
 Sennheiser Consumer Audio HD 660S2 Wired Audiophile Stereo Headphones

Key Features

  • Open-back design for natural and realistic sound
  • 42mm transducers with improved airflow for deep bass
  • Vented magnet system for minimal distortion
  • Lightweight and comfortable fit for long listening sessions
  • Detachable cables with 6.3mm and 4.4mm connectors

 Sennheiser Consumer Audio HD 660S2 Wired Audiophile Stereo Headphones

Appearance and Design

The Sennheiser HD 660S2 Wired Audiophile Stereo Headphones features an open-back earcup design for optimal ventilation and breathability during extended listening sessions. The lightweight headband design adds to the overall comfort. Visually, the classic bronze accents give the headphones an elegant aesthetic.

Features and Operation

Equipped with extra-large 42mm drivers, the Sennheiser HD 660S2 Wired Audiophile Stereo Headphones utilizes an optimized airflow system to deliver double the sound pressure in the low frequencies. The open-back configuration provides excellent ambient noise isolation. Connectivity is provided by detachable cables with 6.3mm and 4.4mm plug options.

Advantages

The extended and impactful bass complements the natural mids and smooth treble nicely. The open-back design and plush earpads deliver superb comfort for prolonged use.

Characteristics

By enhancing the bass without compromising the lifelike mids and treble, the Sennheiser HD 660S2 Wired Audiophile Stereo Headphones provides a balanced yet engaging sound signature perfect for critical listening.

Ease of Use

The Sennheiser HD 660S2 Wired Audiophile Stereo Headphones is easy to operate with adjustable earpads and headband. No extra software or drivers required - just plug and play.

 Sennheiser Consumer Audio HD 660S2 Wired Audiophile Stereo Headphones

Sound Signature

Lows are powerful and prominent, mids are natural and lifelike, and highs are smooth and non-fatiguing. Overall, the sound is warm and balanced.

Battery Life

The Sennheiser HD 660S2 Wired Audiophile Stereo Headphones are wired headphones without any battery. They rely solely on the connected device to drive them. Battery life does not apply for this model.

Connectivity

Connectivity is provided by the included 1.8m detachable cables - one with a 6.35mm jack and one with a 4.4mm jack. A 6.35mm to 3.5mm adapter is also included. There is no wireless functionality.

Controls

There are no onboard controls for playback or volume. Those functions have to be handled directly through the connected audio source device.

 Sennheiser Consumer Audio HD 660S2 Wired Audiophile Stereo Headphones

Origin and Release

Designed in Germany and manufactured in Ireland, the Sennheiser HD 660S2 Wired Audiophile Stereo Headphones was released in February 2023 as a brand new audiophile headphone model.

Brand History

Sennheiser, founded in 1945, is known for manufacturing high-fidelity audio equipment for consumers and professionals.

Usage Scenarios

The open-back design of the Sennheiser HD 660S2 Wired Audiophile Stereo Headphones makes them best suited for use at home or in the studio, where you can fully appreciate the spacious and detailed sound without external noise interference. They are not ideal for portable use or noisy environments.

Customer Feedback Analysis

Overall, customer reviews of the Sennheiser HD 660S2 headphones are very positive, with most users praising the expansive soundstage, detailed audio quality, and exceptional comfort.

In terms of sound quality, the most frequently highlighted advantage is the powerful yet precise bass response. Reviewers describe the low-end as having a full-bodied, robust impact that adds dynamics and energy without muddying the mids or highs. The open-back design receives acclaim for providing an airy, spacious sound with excellent instrumental separation. Vocals are characterized as intimate and natural. Treble is depicted as pristine and crystalline. Many audiophiles report hearing details in their music like never before thanks to the revealing nature of the Sennheiser HD 660S2 Wired Audiophile Stereo Headphones.

When it comes to comfort and wearability, owners highly compliment the lightweight construction and lavish earpads that barely make their presence felt during marathon listening sessions. The open-back design helps reduce heat buildup around the ears as well. adjustment range of the headband also suits a wide variety of head sizes comfortably.

In terms of drawbacks, the most common complaints relate to the lofty price tag and mediocre noise isolation inherent in the open-back design. Some remark that competitors offer similar performance for less cost. Others lament the intrusion of ambient noise and sound leakage due to the lack of noise cancellation. However, considering audiophiles are the target market, these drawbacks are expected and accepted by most as a reasonable trade-off.

In summary, while not perfect, the glowing feedback highlights that the Sennheiser HD 660S2 Wired Audiophile Stereo Headphones hits the mark where it matters most to audiophiles - delivering a blissful listening experience through exquisite audio reproduction and premium comfort. The expanded soundstage, lively bass, and natural mids/highs create an acoustic escapade that makes the headphones hard to take off.

Pros

  • Impactful deep bass response
  • Open-back design provides natural, spacious sound
  • Excellent comfort for long listening sessions
  • Premium build quality and aesthetics

Cons

  • Expensive compared to some competitors
  • Open-back allows in ambient noise
  • Cables are on the shorter side

Value

Given the premium materials, sound quality, and reputation of Sennheiser, the Sennheiser HD 660S2 Wired Audiophile Stereo Headphones represents a reasonable value for audiophile headphones. While not cheap, they deliver an exceptional listening experience.

 Sennheiser HD 660S2 Wired Audiophile Stereo Headphones

Conclusion

With its muscular low-end, natural timbre, and premium design, the Sennheiser HD 660S2 Wired Audiophile Stereo Headphones represents an excellent choice for audiophiles seeking a highly engaging listening experience.

Frequently Asked Questions

What is the impedance of the Sennheiser HD 660S2 headphones?

The impedance of the Sennheiser HD 660S2 headphones is 300 ohms, which ensures excellent impulse response and a natural, balanced sound signature.

How does the Sennheiser HD 660S2 enhance the listening experience with sub-bass?

The Sennheiser HD 660S2 doubles the sound pressure at the lowest octaves, providing a more immersive listening experience. With extended sub-bass, listeners can feel the depth and richness of low-frequency notes, adding depth and emotion to music.

Are the Sennheiser HD 660S2 headphones comfortable for long listening sessions?

Yes, the Sennheiser HD 660S2 headphones are designed for exceptional comfort during extended listening sessions. With plush velour earpads and an ergonomic headband, they provide a comfortable fit and excellent breathability, ensuring a pleasant listening experience even during prolonged use.

Can the Sennheiser HD 660S2 headphones be used with different audio sources?

Yes, the Sennheiser HD 660S2 headphones can be used with various audio sources, including desktop setups, mobile devices, and audio interfaces. They come with detachable cables and adapters, making them versatile for different listening environments.

What makes the Sennheiser HD 660S2 headphones stand out compared to other models?

The Sennheiser HD 660S2 headphones offer a warm, inviting sound signature with extended sub-bass, exceptional comfort, and outstanding build quality. They combine the best of Sennheiser’s legendary sound with innovative engineering, providing music lovers with an intimate and deeply moving listening experience.

Tips

  • When using the Sennheiser HD 660S2 headphones, consider experimenting with different audio sources and EQ settings to tailor the sound to your preferences.
  • To prolong the lifespan of your headphones, store them in the provided carry pouch when not in use and avoid exposing them to excessive moisture or heat.
  • For optimal performance, ensure that your audio source provides enough power to drive the 300-ohm impedance of the HD 660S2 headphones.

Knowledge

  1. Sennheiser HD 660S2 headphones have an impedance of 300 ohms, ensuring excellent impulse response and sound quality.
  2. The double sub-bass enhancement in the HD 660S2 provides a more immersive listening experience with extended low-frequency response.
  3. Comfort is a priority with the HD 660S2, featuring plush velour earpads and an ergonomic headband for long listening sessions.
  4. The HD 660S2 headphones offer versatility, compatible with various audio sources and equipped with detachable cables for convenience.
  5. With its warm, inviting sound signature and exceptional build quality, the Sennheiser HD 660S2 stands out as a top choice for audiophiles seeking a deeply moving listening experience.

Specifications

  • Transducer principle: Dynamic
  • Frequency response: 8 - 41,500 Hz
  • Sound pressure level: Unknown
  • Nominal impedance: 300 Ω
  • Distortion: Unknown
  • Ear coupling: Around ear
  • Magnet system: Vented magnet system

Box Contains

  • HD 660S2 headphones
  • 6.3mm cable (1.8 m)
  • 4.4mm cable (1.8 m)
  • 6.3mm to 3.5mm adapter
  • Carry pouch

How To Use

  • Connect the headphones to your audio source using the appropriate included cable
  • Adjust the earpads and headband for a comfortable fit
  • Make sure the open-back earcups are positioned away from obstructions
  • Sit back and enjoy your music!