Koss Plug Noise Isolating Earbud (Black)


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Manufacturer Part#  PLUG

UPC Code: 021299147573

Provantage Code:  KOSS1CW

Condition:  Factory New

  • Product Type: Earphone
  • Connectivity Technology: Wired
  • Form Factor: Open
  • Limited Warranty: Lifetime
  • Maximum Frequency Response: 20 kHz

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ElectronicsAudio ElectronicsHeadphones/Earphones


Koss PLUG Specifications

    Plug Noise Isolating Earbud (Black)

At a Glance

    • Noise isolating in-ear headphones
    • Memory foam ear cushions
    • In-ear headphones expand for custom comfort, improving isolation and high fidelity, and enhancing deep bass and treble clarity
    • Additional soft foam ear cushions included
    • Covered under the Koss Stereophones Limited Lifetime Warranty


    The Plug earphone is the first of its kind. It delivers accurate acoustical reproduction and unbelievable isolation typically found in more expensive, closed-style earphone. The Plug 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 expands for a custom fit to improve isolation and enhance deep bass and treble clarity.

    The Koss Plug revolutionized the world of in-ear headphones. A first of its kind, these are stereo, noise isolating in-ear headphones that deliver the kind of accurate acoustical reproduction and isolation typically found in high-end, closed-style high fidelity headphones.


Product NamePlug Noise Isolating Earbud (Black)
Manufacturer Part NumberPLUG
Product TypeEarphone
Earpiece DesignEarbud
Earpiece TypeBinaural
Minimum Frequency Response10 Hz
Maximum Frequency Response20 kHz
Connectivity TechnologyWired
Form FactorOpen


Sound ModeStereo
Cable Length4 ft
Impedance16 Ohm
Limited WarrantyLifetime
Product LinePlug
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