HD-668B Semi-Open Pro

Superlux HD668B Professional Studio Standard Headphones are a semi-open dynamic headphone whose sound quality meets the demands of even professional recording studios. The balanced and high definition sound of the HD-668B assures that a professional sound engineer can have full confidence when mixing down or during post production.

Its patented sturdy headband structure provides long-lasting durability even in challenging conditions, yet its light weight and optimized mechanical pressure provides long-term wearing comfort. The HD-668B comes equipped with 2 detachable straight cables: The short cable is 1 meter long for personal sound source on-the-move applications and the long cable is 3 meters long for professional monitoring applications.


  • Patented durable structure
  • Comfortable, self-adjusting headband pads
  • Comfortable, long-lasting ear pads
  • Detachable, single side cable
  • Cable clip included
  • High resultion drivers
  • Precision tuned acoustic chamber
  • Optimized headband pressure
  • Light weight






  • Type: Dynamic, semi-open
  • Driver: ø50mm, neodymium
  • Sensitivity: 98 dB SPL (1 mW)
  • Frequency Response: 10-30000Hz
  • Max. Input Power: 300 mW
  • Rated Impedance: 56Ω (copper-coated aluminum wire)
  • Ear Pads: Leatherette
  • Cables: 1-meter (3.3 ft.) & 3-meter (9.8 ft.) straight, single-sided; plug-in cable on headphones (mini stereo connector)
  • Connector: Gold plated stereo mini plug
  • Headphone Caliper Pressure: Approx. 3.5 N
  • Net weight (without cable): 222 g (7.8 oz)
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