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Sennheiser HD 660S

Sennheiser HD 660 S Headphone
Sennheiser HD 660 S Headphone

Sennheiser HD 660S

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Product information

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.


  • Impedance: 150 Ω 
  • Connector: Stereo jack plug, gold-plated 6.35 mm, unbalanced, 3-pin 4.4 mm, balanced, 5-pin
  • Frequency response: 10 – 41,000 Hz (-10 dB) 
  • Sound pressure level (SPL): 104 dB at 1V 1kHz
  • Ear coupling: Over-ear (circumaural) 
  • THD + N, total harmonic distortion and noise: < 0,04% (1 kHz, 100 dB) 
  • Transducer principle (headphones): Dynamic, open
  • Weight w/o cable: Approx. 260 g (without cable) 
  • Woo Audio is an authorized reseller


  • HD 660 S headphone x 1
  • 1/4" TRS cable x 1
  • 1/4" to 3.5mm adapter x 1
  • 4.4mm Balanced cable x 1
  • Storage box x 1

In the box



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