HD 660 S

Promo: $249

Absolute audio perfection with lightweight open construction.


  • Get studio-grade sonic clarity and transparency.
  • Enjoy hours of perfect audio inside ultra-soft elliptical ear cups.
  • Low impedance offers reference-class fidelity with hi-res mobile players.
  • Interchangeable cables made of highly conductive OFC copper to connect to any source.



Even audio industry professionals marvel at the reference-class sound coming from the elegant HD 660 S. These open-back dynamic headphones deliver crisp bass, stunning mids and gentle treble for an emotionally expressive musical experience you have to hear to understand. Premium cables and plugs means every inch of the audio signal is uncompromised.

What's in the box

  • HD 660 S headphones
  • Cable with 6.35 mm plug
  • Cable with 4.4 mm Pentaconn plug (balanced)
  • Adaptor 6.35 to 3.5 mm
  • Manual
  • Storage box


  • Impedance150 Ω

  • Connector6.35 mm / 4.4 mm Pentaconn

  • Frequency response10 – 41,000 Hz (-10 dB)

  • Sound pressure level (SPL)104 dB at 1V 1kHz

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