Sennheiser HD 555 review

These days electronics products come and go and it's quite rare if a product manages to stay on the market for more than a couple of years. The subject of this short review is the Sennheiser HD 555, these headphones have been on the market since 2004 and are still selling strong. The HD 555 is an open, circumaural stereo headphone that was originally designed as a cheaper version of the Sennheiser HD 595. I bought mine in 2010 for around 85EUR.

The headset arrives in a large cardboard box that slides open to reveal the headphones.


opened box

The HD 555 is a full-size headphone, it has an open, circumaural design and has a black/silver grey color scheme. Circumaural means that the earpads surround the ear and open refers to the fact that the back of the cups is open, which means (some) sound will leak out. The included cable is 3 meters long, a good cable length for studio work but way too long if you plan on using the headphone for your computer/laptop.

HD 555 headset

  • Nominal impedance: 50 Ohm
  • Contact pressure: 3,5 N
  • Weight w/o cable: 260 g
  • Jack plug: 6.3 mm stereo (3.5 mm Adapter)
  • Transducer principle (Headphones): open, dynamic
  • Ear coupling: circumaural
  • Cable length: 3 m
  • Frequency response (headphones): 15 - 28000 Hz
  • Sound pressure level (SPL): 112 dB (1 kHz and 1 Veff)
  • THD, total harmonic distortion: < 0.2 %
  • The headphone has a clean, professional look.

    HD 555 headset

    The headband size is fully adjustable.

    HD 555 headset 

adjustable size

    And the velvet cushioning provides great comfort, even after many hours.

    HD 555 headset padding

    A major con for me is that the HD 555 uses a 6.3mm stereo jack. Sennheiser includes a 3.5mm adapter so you can use it with computers and MP3 players, but I think it would be better the other way around. The 6.3mm to 3.5mm conversion makes the connector very long, it acts as a large lever that can put a lot of stress on the headphone port of your laptop or MP3 player.

    HD 555 stereo jack

    HD 555 headset stereo 

jack adapter

    Added: May 3rd 2011
    Product reviewed: Sennheiser HD 555
    Reviewer: Thomas De Maesschalck
    Score: 8.5/10
    Page: 1/2

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    About the Author

    Thomas De Maesschalck

    Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.

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