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Zebra hot pink in-ear headphones with straight dual-entry cable

Koss

Koss 144428 The Plug Zebra Hot Pink canal headphone

SKU CH-497S-Q2F43 MPN 144428

Canal earbuds with a 10 Hz – 20,000 Hz range, 112 dB sensitivity and memory-foam tips that mould for a custom seal and deep isolation

  • TypeHeadphone
  • ColorZebra Hot Pink
  • Frequency Response10Hz - 20,000 Hz
  • THD<0.3%
  • Input Impedance16 ohms
  • Sensitivity112 dB SPL/1mW
  • Deep bass from 10 Hz low-end response
  • Clear detail up to 20,000 Hz high-frequency range
  • Loud output at 112 dB sensitivity per milliwatt
  • Custom fit with slow-recovery ear cushions
  • Reliable connection via 3.5 mm L-shaped plug

What it is and who it's for

The Koss 144428 The Plug Zebra Hot Pink is a canal-type stereo earbud with a 3.5mm connector. It suits listeners who want a lightweight, wired in-ear headphone for portable devices and value a secure, isolating fit with a distinctive colour scheme.

The specification that decides fit

A 16 ohm input impedance and 112 dB SPL/1mW sensitivity mean the earbuds reach loud volumes directly from smartphone or laptop outputs without an amplifier. The 10Hz to 20,000 Hz frequency response covers the full audible range, while total harmonic distortion stays below 0.3%.

Thermals, noise and power draw

Passive operation produces no heat and draws no power from the source beyond the audio signal. The canal coupling with slow-recovery ear cushions blocks external noise physically, so there is no active noise-cancellation circuitry to add hiss or battery drain.

Highlights

  • Deep bass from 10 Hz low-end response
  • Clear detail up to 20,000 Hz high-frequency range
  • Loud output at 112 dB sensitivity per milliwatt
  • Custom fit with slow-recovery ear cushions
  • Reliable connection via 3.5 mm L-shaped plug

Specifications

BrandKOSS
SeriesTHE PLUG
Model144428
TypeHeadphone
ColorZebra Hot Pink
Frequency Response10Hz - 20,000 Hz
THD<0.3%
Input Impedance16 ohms
Sensitivity112 dB SPL/1mW
Connector3.5mm
Ear CouplingCanal
Cord LengthStraight, Dual Entry, 4ft
Weight0.25 oz w/o cord
FeaturesThe Plug, a stereo earbud for the discriminating listener.
The Plug earbud is the first of its kind. It delivers accurate acoustical reproduction and unbelievable isolation typically found in more expensive, closed-style stereophones.
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 Plug features special ear cushions made of hydrophillic,
Shipping weight0.45 kg
Package size127 × 51 × 25 mm

Questions about this item

How does the 112 dB sensitivity affect volume on a phone?

The high sensitivity means the earbuds reach loud levels with very little power, so a typical smartphone output drives them to comfortable listening volumes without needing an external amplifier.

What devices work with the 3.5 mm connector?

The standard 3.5 mm plug connects to any device with a matching headphone jack, including phones, laptops, tablets and portable audio players.

How do the canal tips stay in place?

The special cushion material slowly conforms to the ear canal shape, creating a custom seal that holds the earbuds securely and provides strong isolation.

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