HD-669 Studio Monitor

Superlux HD-669 Professional Studio Standard Monitoring Headphones are closed-back, circumaural headphones designed for professional monitoring applications. Although suitable for a very wide range of applications, the exceptional attenuation of external noise makes the HD-669 particularly useful for use in a high-noise environment. The balanced, high definition and clarity sound of the HD-669 assures that a professional sound engineer can have full confidence when recording or monitoring.

HD-669 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-669 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. These cables can be connected together for even more distance if desired. Included cable clip can secure detachable cable from pulling out by incident.


  • Patented durable structure
  • Comfortable, slef-adjusting headband pads comfortable, long-lasting ear pads
  • Detachable, single side cable
  • Included cable clip to secure cable from pulling out by incident
  • Circumarual earphones
  • High noise attenuation
  • High resolution drivers
  • Precision tuned acoustic chamber


  • Use as monitoring headphones in a noise environment
  • Broadcast and TV applications
  • Film and theater applications
  • Recording applications






  • Type: Dynamic, closed-back
  • Driver: ø50 mm, neodymium
  • Sensitivity: 98 dB SPL (1 mW)
  • Frequency Response: 10-30000 Hz
  • Max. Input Power: 200 mW
  • Rated Impedance: 56Ω (Copper-coated aluminum wire)
  • Ear Pads: Leatherette
  • Cables: 1-meter (3.3 ft.) 7 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. 5 N
  • Net Weight (without cable): 235 g (8.3 oz)
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