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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 72 reviews
tadashi katoh

HD 660 S

chris o'neill
Pretty much perfect

These days I stream much more music than I play from traditional media, so I thought it was time I got headphones as good as my main speakers.
The 660S has at least as much range and presence as my big Tannoys (and the image is better, as you'd expect). They need a headphone amp most of the time, but I already had a small Arcam, which is easily good enough.
I find them very comfortable and given the quality they were a very fair price. Considering the extra convenience of being able to carry them from room to room, the considerably wider range of music now that I can search online, and my partner's delight that she no longer has to share my listening preferences ... I might even be retiring those big Tannoys someday soon.

Robert Andreas Havn Andresen
Great value

I purchased the HD 660 S headphones directly from Sennheiser for NOK 3500. This is amazing value and a great upgrade from my previous HD 595 headphones. Time from order until I had them in my hands was less than 2 business days, and the shipping was free! Compared to my HD 595 these have more pronounced bass and great comfort with more even clamping force on the head. I have paired them with a Benchmark DAC1 which works great.

Simon York
The best I’ve owned

I have used headphones to produce and listen to music and also in video production. These HD660s headphones are the best I’ve used in 30 years.

Colin Fraser
Col on Sennheiser 660s

The headphones give clear and detailed sound and delivery was very prompt.

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