Superlux HD668B Semi Open Dynamic Headphones

• High resolution drivers.
• Precision tuned acoustic chamber.
• Patented durable structure. 
• Comfortable, self-adjusting headband pads.

The HD668B is a semi-open dynamic headphone whose sound quality meets the demands of even professional recording studios. The balanced and high definition sound of the HD668B 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.

Type：Dynamic, semi-open
Driver：Ø50mm, neodymium
Sensitivity：98 dB SPL（1 mW）
Frequency Response：10～30,000 Hz
Max. Input Power：300 mW
Rated Impedance：56 Ω（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）：222g（7.8 oz）