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Koss The Plug
Portable Stereophones


Koss's miniature portable earphone...
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Our Price: $13.94
List Price: $14.99
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Koss's miniature portable earphone, affectionately dubbed "The Plug," makes use of an ear-cushion material (similar to that used in sound-blocking earplugs) that slowly expands in your ear canal to provide a custom fit and maximum sonic isolation from external noises. A detachable, extrawide headband makes these Koss-termed "stereophones" easy to carry or store.

For accurate sound reproduction, these earbud-style headphones are made with oxygen-free copper voice coils and neodymium iron boron magnets. You can enjoy them with either a portable or home audio device, since both 0.125-inch and 0.25-inch adapter jacks are included.

"The Plug" weighs a mere quarter ounce and has a frequency response rated at an impressive 16 to 23,000 Hz (though its unlikely you'll hear bass output anywhere close to what you'd get from a similarly rated loudspeaker!). Impedance is 16 ohms, with less than a 0.3 percent distortion and reasonably high sensitivity of 112 dB SPL/1 mW. The straight, 4-foot cord is outfitted with a handy mute switch. It comes with a carrying case and a manufacturer's lifetime warranty.


  • Frequency Response: 10-20,000 Hz
  • Unique earbud design directs sound into the ear canalfor deep bass andextended frequency performance
  • Specialty ear cushion material forms slowly in theear canal to provide acustom fit and maximum isolation
  • Convenient carrying case for storage and protection
  • Straight, dual entry 4 foot cord
  • Includes replacement ear cushions
  • Reliable L plug for improved reliability and durability


  • Frequency Response: 10-20,000 Hz
  • Impedance: 16 ohms
  • Weight: 0.25 oz w/o cord
  • Sensitivity: 112 dB SPL/1mW
  • Distortion: <0.3%
  • Cord: Straight, Dual Entry, 4ft
  • Plug: 3.5 mm

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