Product Details:
The HD668B is a semi-open dynamic headphone whose sound quality meets the demands of even professional recording studios. Its patented sturdy construction provides long-lasting durability even in challenging conditions， yet the headband\\\'s light weight and optimized mechanical pressure provides long-term wearing comfort.
The HD668B reproduces natural， spatial and accurate sound for all types of music. It features a balanced， contoured and bass enhanced full range frequency response with authentic mid range and high frequency reproduction. HD668B comes equipped with two detachable straight cables: the short one is one meter long for personal sound source applications and the long one is 3 meters long for professional monitoring applications. Both cables can be connected together for even more distance if desired.
Shipped with a protective storage pouch and gold-plated 3.5mm to 1/4 inch snap-lock adapters， the Superlux HD668B headphones are an excellent choice for a wide range of audio listening tasks and applications.

Features:
High resolution drivers
Precision tuned acoustic chamber
Extended bass response
Patented durable structure
Comfortable， self-adjusting headband pads
Comfortable， long-lasting ear pads
Detachable， single side cables
Optimized headband pressure
Light weight
Included Accessories
Protective carry pouch
Long and short cables

3.5mm to 1/4 inch screw-on adapters

Type	Semi-open
Driver	50mm double dome neodymium magnet
Sensitivity	98 dB SPL 1mW
Frequency Range	10 to 30000 Hz
Rated Impedance	56 Ohms
THD	<0.3% 1KHz/1V
Max Input Power	300 mW
Cords	Detachable 1 meter and 3 meter straight
Connectors and Adaptors	Gold plated stereo 3.5mm with 3.5mm to 1/4 phone adaptors
Headband Pressure	3.5 newtons
Weight	222 g (7.5 ounces) without cable

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1. 12 months Manufacturer’s limited Warranty for defective items (excluding items damaged and/or misused after receipt). Accessories come with a 3-month warranty.
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EXPIRED WARRANTY.
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