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Features Dynamic element design for deep bass performance Portable stereophone with unique "SportClip" design Straight, dual entry 4ft cord Frequency Response: 60-20,000Hz Lightweight Specifications Frequency Response: 50 Hz - 20... (read more)

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Features Frequency Response: 60-20,000 HZ Unique sportclip design eliminates the headband for ultra lightweight comfort and portability Dynamic element for deep bass and full frequency Straight, dual entry 4 foot cord Specifications Frequenc... (read more)

Features Frequency Response: 50-20,000 Hz Dynamic element for extended frequency response Behind-the-head design for maximum comfort during extended wearing periods Foam ear cushions for open, hear-through sound Straight, single entry 4 foot co... (read more)

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The SPARKPLUG with New Improved CushionsThe SparkPlug features a dynamic element that is positioned just outside the ear and connected to a tubular port structure that is inserted on a soft expandable cushion into the ear canal. The soft foam cushion expa... (read more)

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Features Frequency Response: 10-20,000 Hz Dynamic element for extended frequency response Unique earbud design directs sound into the ear canal for deep bass and extended frequency performance Speciality ear cushion material forms slowly in the e... (read more)

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Features Frequency Response: 15-25,000 Hz Titanium-coated high polymer diaphragm for accurate sound reproduction Dynamic element design for extended frequency response Sportclip design fits around the ear to eliminate the headband Neodymium iro... (read more)

The KEB/24 is lightweight with an in-the-ear design for deep bass and listening to music on the go. The KEB/24 features a dynamic element that is positioned just outside the ear for extended frequency response of 15-20,000Hz. The KEB/24 includes small, ... (read more)

The KEB/24 is lightweight with an in-the-ear design for deep bass and listening to music on the go. The KEB/24 features a dynamic element that is positioned just outside the ear for extended frequency response of 15-20,000Hz. The KEB/24 includes small, ... (read more)

Features Frequency Response: 15-25,000 Hz Flexible headband design allows listener to wear the headband on top of or behind the head Great for active sports or when wearing a cap or hat Foam ear cushions for an open, hear-through sound Collapsi... (read more)

QZ50 Active Noise Reduction Stereophone. A generation of music lovers is coping with noisy world. Anyone, particularly those who regularly travel and are exposed to repetitive sound, can find peace in this new noise reduction stereophone. The QZ50 crea... (read more)

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Features Frequency Response: 15-20,000 Hz Closed ear cushions for maximum bass and isolation Titanium coated high polymer diaphragm for accurate sound reproduction Neodymium Iron Boron rare earth magnet structures Collapsible design for protect... (read more)

Designed using the technology from another popular Koss model, The Plug, the stereo earbud features a dynamic element that is positioned just outside the ear. The element is connected to a tubular port structure that is inserted on a soft expandable cushi... (read more)

Quite Zone QZ PROActive Noise Reduction StereophonePerfect for travel The Koss Quiet Zone™ QZ PRO stereophone delivers a winning combination of passive and active noise reduction (ANR) for music lovers who are looking for a little peace and quiet on the... (read more)

Quiet Zone QZ99Passive Noise Reduction The Koss Quiet Zone™ QZ99 stereophone is an extra-durable stereophone that delivers amazing passive noise reduction. Designed initially for use with racing radio scanners and metal detectors, the QZ99 has been a fa... (read more)

A compact design with robust sound - the KEB/79 is lightweight with an in-the-ear design that delivers accurate acoustical reproduction, deep bass and unbelievable isolation typically found in closed-style stereophones. The KEB/79 features a dynamic ele... (read more)

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Features Frequency Response: 10-25,000 Hz Titanium coated high polymer diaphragm for accurate sound reproduction Closed ear cushions for maximum bass and isolation Built for maximum durability for studio and broadcast use Oxygen free copper voi... (read more)