Sennheiser HD 660S2 Wired Over-Ear Headphones - 700240

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Sennheiser SKU: 700240
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Sale price$499.95 Regular price$599.95


Enjoy your music on a totally new level with the HD 660S2 from Sennheiser, the improved successor to the HD 660S with audiophile specs and greatly enhanced bass response. The HD 660S2 delivers a deeply moving auditory experience thanks to features like an optimized steel mesh surround, improved transducer airflow, and lighter weight, higher impedance aluminum voice coils, which deliver more impact and extended sub-bass performance, so you can hear the lowest pianos notes and the deepest bass drum hits without sacrificing comfort or natural sound reproduction. 

The open-back design and ultrasoft velour earcups of these over-ear headphones ensure extreme comfort during extra-long sessions, and perfectly channel-matched drivers within ±1 dB provide a truly intimate, high-fidelity listening experience. The HD 660S2 comes with two detachable cables in 1/4" unbalanced and 4.4mm balanced flavors, and the headphones also include a handy 1/4" to 3.5mm adapter and a convenient carry pouch.


  • Optimized airflow around the transducer, decreasing air leakage and increasing low-frequency acoustic pressure
  • Lightweight Duofol aluminum voice coils with 300-ohm impedance for better electrical damping and improved detail retrieval
  • Twice the sound pressure than previous models at 20 Hz, improving the impact of percussion and electronic music
  • Stronger response above 5 kHz for more perceived clarity, smoother response for more natural reproduction
  • Uniquely powerful vented magnet system for minimized distortion
  • 38mm high-performance dynamic drivers 
  • Steel mesh baffle for less permeability and increased but natural bass response
  • Excellent balance and superior imaging through matched acoustic systems

At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.

  • Most in-stock orders placed Monday-Friday before 1PM PST ship the same day. Orders placed after 1PM will ship the next day of business. General restrictions apply; please see our full shipping policy here.
  • We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.

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