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Sennheiser HD 660 S

Open back headphones

Last price 289€94
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Overview

Music and emotion

The Sennheiser HD 660 S open-back headphones will enhance your long music listening sessions. With them, you'll enjoy a high-performance design and quality sound reproduction to enjoy your favourite artists. Comfort, versatile connectivity and cutting-edge technology are the hallmarks of these sublime audiophile headphones.

Sennheiser quality sound

With a new transducer and aluminium voice coils, the Sennheiser HD 660 S headphones will give you the best listening experience. Experience clean bass, smooth highs and excellent midrange response to enjoy every note of your favourite songs.

This circum-aural model has an open design and a simple, elegant look with a matte anthracite and black finish.

At the heart of your musical passion

The padded headband and replaceable ear cushions ensure comfort. The elliptical earpieces will fit the anatomy of your ear perfectly, so you'll enjoy listening for hours on end.

The HD 660 S headphones offer a wide range of listening options with their 6.35 mm and 4.4 mm stereo cables and 6.35 mm to 3.5 mm jack adapter.

Ultimate connectivity

The HD 660 S has been designed to enjoy music in superior quality from many different audio sources. Thanks to its low impedance, it also offers the class-leading fidelity of high-resolution mobile players. Naturally, the Sennheiser HD 660 S reveals its full potential when connected to the balanced outputs of a dedicated headphone amplifier, such as the HDV 820 (sold separately), or to the balanced output of a portable digital audio player. As a result, Sennheiser has thought of everything, and it comes with a wide range of cables to suit almost any situation. All cables are made of highly conductive OFC copper, with robust para-aramid fibre reinforcement.

Sophisticated design for premium comfort

Everything about the HD 660 S is designed to give you a pleasant listening experience - including its solid, lightweight open construction. Its elliptical earpieces are shaped to respect the anatomy of the ear, while the thickly padded headband and replaceable ear cushions ensure hours and hours of comfortable listening.

The pure, unadulterated sound of the HD 660 S is reflected in its new anthracite and matt black design. This refined aesthetic embraces both timeless elegance and contemporary style - and uncompromising craftsmanship, like everything else about the HD 660 S.

Key features:

  • Open circum-aural headphones
  • Impedance: 150 O
  • Connector: 6.35mm gold-plated stereo jack plug, unbalanced, 3-pin 4.4mm plug, balanced, 5-pin
  • Frequency Response: 9 - 41,500 Hz (-10 dB)
  • Clean bass, smooth highs and excellent midrange response
  • New transducer for better control of diaphragm movement
  • Aluminium voice coils
  • Padded headband and replaceable ear cushions
  • Sleek and elegant design
  • 6.35 mm (unbalanced), 4.4 mm (balanced) stereo jack and 6.35 mm to 3.5 mm adapter
  • Weight: 260 g
Specifications
Select your criteria

General information

Product name

Sennheiser HD 660 S

Brand

Sennheiser

Model

508826

Design

Headset type

Over-Ear

Headphones configuration

Open back

Ear coupling

Circumaural

Use

Hi-Fi

Foldable

No

High-Res audio

No

Active noise cancelling

No

Audio specifications

Speaker diameter

38 mm

Bandwidth (Min frequency)

9 Hz

Bandwidth (Max frequency)

41.5 kHz

Impedance

150 Ohm

SPL Max

104 dB SPL

Harmonic distortion

0.04 Percent

Connectivity

Remote control

No

Volume control

No

Connector(s)

6.35mm Jack Male Stereo

Wireless

Wireless

No

True Wireless

No

Bluetooth

No

NFC

No

Integrated voice assistant

Without voice assistant

Physical characteristics

Color

Black

Headphone weight

260 g

Warranties

Commercial warranty

Seller 3 years

Legal warranty

See terms & conditions

Product referenced on 7 Nov 2019

Customer reviews
Global rating
10/10
based on 2 reviews Editorial and moderation guide
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  • by Fedor
    Posted on 16 Oct 2023
    Product bought from LDLC on 16 Sep 2023
    Number of reviews: 1 Average rating: 10

    Perfect

    I am very pleased with the service and the product.
    The headphones correspond completely to my expectations with a crystal clear sound and bass well present.
    I am very satisfied with my purchase from ldlc.
    The price was very competitive compared to other sites I have visited.

    Review automatically translated
  • by vincent
    Posted on 26 Jul 2023
    Product bought from LDLC on 14 Jul 2023
    Number of reviews: 5 Average rating: 8

    Very good product

    Do we still need to present the HD 660s?
    I like what I hear! Open headphones! The end.

    PS: thank you LDLC, for the small attention.

    Review automatically translated

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