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Lightweight on-ear headphones with adjustable headband, durable ABS cups, coiled cord, 3.5 mm plug

Koss

Koss 156548 ED1TC Supra-aural Headphone

SKU CH-REVS-40ZXE MPN 156548

Supra-aural wired headphones with 3.5 mm connector, 100 Hz – 20 kHz response, 32 ohm impedance, 98 dB sensitivity and cleanable ABS cups

  • Frequency range100 Hz-20 kHz
  • Impedance32 ohms
  • Signal-to-noise ratio98 dB SPL
  • Connection3.5 mm
  • Wearing styleSupra-aural
  • Cord length4 ft (1.22 m)
  • Easy cleaning with alcohol-safe plastic housing
  • Reduces ambient noise via sealed supra-aural cups
  • Fits children to adults with adjustable headband
  • Wired 3.5mm connection with 4-foot cord
  • Lightweight 0.25 lb design for all-day wear

Institutional Design

The Koss ED1TC is a wired supra-aural headphone built for schools, libraries and training departments. Its ABS plastic ear cups create a seal that reduces ambient noise interference and leakage. The adjustable headband fits a wide range of head sizes from children to adults. The 3.5 mm connector plugs directly into standard audio ports.

Build Integration

The four-foot cord connects to any device with a 3.5 mm jack without adapters or power. At 0.25 pounds the headset adds negligible load to a workstation or mobile cart. Plastic ear clips and housings can be wiped with a soft cloth and alcohol-based cleaner between users. No software drivers or batteries are required for operation.

Suited For

This model suits institutions needing durable, easy-to-sanitise headphones for shared daily use. The 32 ohm impedance and 98 dB sensitivity work well with typical classroom audio sources. Buyers who need active noise cancellation, wireless freedom or replaceable foam cushions should look at other categories.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 75% of the 7,078 comparable items (median $25.99).

Specifications

Product
Brand nameKOSS
Model nameED1TC
Part number156548
Product typeOver the Ear
Audio & video
Frequency range100 Hz-20 kHz
Impedance32 ohms
Signal-to-noise ratio98 dB SPL
Wearing styleSupra-aural
Ports & slots
Connection3.5 mm
Size & build
Cord length4 ft (1.22 m)
Shipping weight0.11 kg
Package size150 × 150 × 56 mm

Questions about this item

How long is the cable on the Koss ED1TC headphones?

The cable is 4 feet long, giving enough reach for a desk or lab station without excess slack.

Do the ear cups get hot or make noise during all-day use?

They are passive wired headphones with no fan or electronics, so they generate no heat or noise of their own.

What device jack is needed to plug them in?

A standard 3.5 mm audio output is required — the same jack found on most computers, tablets and media players.

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