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Sennheiser HD 660 S Audiophile Headphones

HD 660 S

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Article number: 508826

Sennheiser’s new HD 660S is the ideal open, dynamic headphone for the passionate audiophile. Meticulously crafted from hand selected components and specially developed acoustic materials, it delivers incredibly low harmonic distortion for an exceptionally natural, lifelike audio experience. With a lower impedance of 150 ohms, the HD 660 S offers the versatility to enjoy reference class high fidelity sound with stationary and mobile players alike.
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

Customer Reviews

Based on 16 reviews
Ali Al Harmoodi
Amazing headsets

Best headset I ever owned

Harold Miller
Excellent headphones

The sound and comfort is excellent. Worth making sure they are positioned properly, i.e. the ear is clear within the hole of the cushion.
For this cost however, I would have included a cord of 1m, for those that listen on personal devices. Not only would this be more convenient, it also increases sound quality to have less cable to run through. Lastly, and perhaps trivially, I would like some more exotic material in the outer construction, such as aluminium, titanium or wood. Perhaps there could be an option for a more luxurious version at a slightly higher price

Francesco D.

Perfette in tutto grazie

Fumio M.


Athiwat C.

Amazing pair of headphone, well worth the money, sound is great. Just as good/even better then the HD800 . Recommend using a good dac ans out to drive it to get the best out of the headphone !

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