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Black and silver over-ear headphones with padded headband and rotating earcups, coiled cable visible

Koss

Koss UR29 Circumaural Headphones Black/Silver 8 ft 3.5/6.3 mm

SKU CH-38N1-SGPG2 MPN UR29

Closed-back circumaural headphones with bass-enhanced sound, rotating earcups, an 8 ft cord and included 3.5 mm and 6.3 mm gold-flashed plugs

  • TypeHeadphone
  • ColorBlack/Silver
  • Frequency Response18Hz-20KHz
  • THD<0.2%
  • Input Impedance100 ohms
  • Sensitivity101 dBSPL/1mW
  • Bass-enhanced sound with 1.4 mil Mylar dynamic elements
  • Wide 18Hz-20KHz frequency response captures full audio range
  • Circumaural leatherette earpads and padded headband for comfort
  • Fold-flat rotating earcups collapse into a compact package
  • 8 ft cord with 3.5 mm and 6.3 mm gold-flashed connectors

Purpose & Audience

The Koss UR29 is a circumaural stereo headphone built for DJs and mobile listeners who want bass-enhanced sound in a durable, foldable design. Its closed leatherette earpads and padded adjustable headband suit extended sessions, while the rotating earcups collapse into a compact package for transport.

Interface Limits

A fixed 8 ft single-entry cord terminates in a gold-flashed 3.5 mm plug with a gold-flashed 6.3 mm adapter included, so the headphone connects directly to portable devices and professional gear without extra cables. The 100 ohm impedance and 101 dB sensitivity mean it reaches usable volume from most sources, though very low-power outputs may not drive it to peak levels.

Deciding Specification

Frequency response spans 18 Hz to 20 kHz with total harmonic distortion below .2 percent, delivered by dynamic elements using 1.4 mil Mylar diaphragms for rigidity across the range. If your work requires a wider measured bandwidth or lower distortion floor, this model will not meet that threshold.

Highlights

  • Bass-enhanced sound with 1.4 mil Mylar dynamic elements
  • Wide 18Hz-20KHz frequency response captures full audio range
  • Circumaural leatherette earpads and padded headband for comfort
  • Fold-flat rotating earcups collapse into a compact package
  • 8 ft cord with 3.5 mm and 6.3 mm gold-flashed connectors

Specifications

BrandKOSS
ModelUR29
TypeHeadphone
ColorBlack/Silver
Frequency Response18Hz-20KHz
THD<0.2%
Input Impedance100 ohms
Sensitivity101 dBSPL/1mW
Connector3.5mm/ 6.3mm
Ear CouplingCircumaural
Cord Length8 ft
Weight1.07
FeaturesThe UR29 Stereophone delivers bass-enhanced high quality sound in a sturdy package suitable for DJs and listeners on the go. Dynamic elements, constructed from 1.4 mil mylar for enhanced rigidity, minimize mechanical distortion and yield a full frequency response from 18-20,000 Hz. Anisotropic ferrite magnets enable the UR29 to deliver great volume, even with low-voltage portable devices. Oxygen-free copper voice coils improve signal transmission and conduction for cleaner, clearer sound. Closed leatherette earcushions seal comfortably around the ears, improving bass performance and
Shipping weight1.36 kg
Package size267 × 191 × 95 mm

Questions about this item

Should I pick the 3.5 mm or the 6.3 mm plug for my device?

The cable ends in a 3.5 mm gold-flashed plug and a screw-on 6.3 mm gold-flashed adapter is included, so you can use either jack without extra accessories.

What does the 101 dB sensitivity mean when I plug these into a phone or laptop?

At 101 dB per milliwatt the UR29 reaches loud listening levels from low-power outputs such as smartphones, tablets or portable players without needing a separate amplifier.

How does the 100 ohm impedance affect compatibility with audio interfaces or mixers?

A 100 ohm load is easy for virtually any headphone output — professional interfaces, DJ mixers, studio gear or consumer devices — so you will not run into impedance-matching issues.

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