HD 660S

Sennheiser’s new HD 660S is the ideal open, dynamic headphone for the passionate audiophile.
499.00
incl. VAT plus
Article No. 508826
★ ★ ★ ★ ☆ 4.8
17 Reviews

A new audiophile versatility

The new HD 660 S lets you enjoy sophisticated audiophile sound in even more listening situations. The successor of the legendary HD 650 excels with the improved performance of its new transducer design. Thanks to its lower impedance, it delivers reference-class sound also when connected to hi-res mobile players, thus offering much greater versatility. The HD 660 S is an elegantly designed piece of high-quality engineering that indulges the demanding listener with aural precision and great wearing comfort.

Sound for the passionate music enthusiast

Made for the demanding listener, the HD 660 S surpasses the exceptional performance of its predecessor, the legendary HD 650. With a crisp bass, excellent mid-frequency response, and a gentle, pleasantly natural treble, the HD 660 S has an expressiveness that immerses you in every emotion and nuance of music. Still, it always stays exceptionally accurate and transparent.

Sound for the passionate music enthusiast

Cutting-edge Sennheiser technology

The HD 660 S features a new transducer design developed by Sennheiser. This results in improved control of the diaphragm movements thanks to a specially manufactured precision stainless steel fabric, which is adapted to the contour of the diaphragm. Extremely light aluminum voice coils ensure the highest impulse fidelity. The transducers are carefully selected and paired by hand to ensure consistently narrow (±1 dB) tolerances.

Cutting-edge Sennheiser technology

Supreme connectivity

The HD 660 S has been created to enjoy music in supreme quality and from many different audio sources. Thanks to its low impedance it also offers reference-class fidelity with hi-res mobile players. Naturally, the HD 660 S reveals its full potential when it is connected to the balanced outputs of a dedicated headphone amplifier such as the HDV 820 or to the balanced output of a mobile digital audio player. Accordingly, it comes with a choice of cables for just about any occasion. All cables are made of highly conductive OFC copper, featuring very low handling noise and sturdy para-aramid reinforcement.

Supreme connectivity

Designed for high-end comfort

Everything about the HD 660 S makes listening a pure pleasure – not least its strong yet lightweight open construction. The elliptical ear cups are shaped to follow the anatomy of the ear, while thick padding on the headband and the replaceable ear cushions guarantee hours and hours of listening in supreme comfort.

Designed for high-end comfort

The look of sophistication

The pure and effortless sound of the HD 660 S is reflected in its new matte black and anthracite design. It is a high-end aesthetic that embraces both timeless elegance and contemporary style – uncompromising in its craftsmanship, like everything about the HD 660 S.

The look of sophistication

Technical Data

  • Wearing style
    Headband
  • Color
    matte black
  • Frequency response (Headphones)
    9 – 41,500 Hz
  • Sound pressure level (SPL)
    104 dB
  • THD, total harmonic distortion
    < 0,04%
  • Contact pressure
    6.0 N ± 1 N
  • Ear coupling
    circumaural
  • Connector
    6.35 mm / 4.4 mm Pentaconn
  • Cable length
    3 m
  • Transducer principle
    Dynamic, open
  • Nominal impedance
    150 Ω
  • Weight w/o cable
    260 g
Reviews (17)
4.8 of 5 ★ ★ ★ ★
  • Tripokaridos
    Greece
    ★★★★★
    WOW best on series

    My best in line.

    PRO:

    Everything I have all 5 and 6 series , and 660S are the ones with better resolution, better soundstage, controlled bass , just amazing.

    CON:

    Nothing, the new facelift plastics are way better quality than the old ones.

    BEST USES:

    BOTTOM LINE:

    I would recommend this to a friend.

  • Hunter
    ★★★★★
    AMAZING

    I paired mine with the Mayflower Objective 2 amp/dac and the sound quality of these headphones are unlike anything I've experienced. I use mine for listening to music and gaming. If you are looking for headphones that can do it all, look no further than the HD600S.

    PRO:

    Very natural sound, amazing imaging, very comfortable once broken in, gunshots in video games are extremely realistic to the point where you almost want to put earplugs in.

    CON:

    Clamps tight on your head right out of the box, but very easy fix

    BEST USES:

    Anything

    BOTTOM LINE:

    I would recommend this to a friend.

  • Miro
    ★★★★★
    The best audio you’ll hear.

    I truly don’t think there are better headphones than this, unless it’s another pair of Sennheisers.

    PRO:

    Comfortable, unreasonable sound; you really realise that you’ve been missing out on a whole frequency range that other headphones cannot deliver.

    CON:

    Can’t think of any.

    BEST USES:

    It genuinely makes everything sound better. However, play any Master Quality Authenticated song, and listen for yourself.

    BOTTOM LINE:

    I would recommend this to a friend.

Downloads

  • EU Declaration of Conformity
    • EU Declaration of Conformity HD 660 S (390 KB) Download

  • Instruction Manual
    • Instruction manual HD 660 S (6.5 MB) Download

      Version 07/2019