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Koss RUK40 On-ear headphones (Raspberry)

Item # 245RUK40R

Item # 245RUK40R

Shop all Koss Headphones

About the Koss RUK40

David Brown

Impressive sound at a great price

Headphone pioneer Koss has long been at the forefront of producing inexpensive headphones that deliver involving, detailed sound. The RUK40 is their latest triumph of sound quality and comfort at a low price. These unassuming on-ear headphones will impress with their tonal balance and openness. And the cushiony earpads will make it easy to wear the RUK40 for hours on end, for non-stop listening on the go. Available in five colors, these are a great buy if you're looking for comfort and portability in a sweet-sounding set of on-ears.

Product highlights:

  • flat, tangle-resistant 4-foot miniplug cable
  • pivoting earpieces for custom fit
  • frequency response: 20-20,000 Hz
  • sensitivity: 98 dB
  • impedance: 36 ohms
  • warranty: lifetime
  • MFR # RUK40R

What's in the box:

  • Raspberry on-ear headphones with a 4' flat cable (3.5mm plug)

Customer reviews for Koss RUK40

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2 reviews

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More details on the Koss RUK40

Mark G.

Features & specs

General
Fit Style On-ear
Earcup Type Closed
Earcup Width x Height 2.467" x 2.467"
Noise-canceling No
Bluetooth No
Bluetooth Version ---
Single-earbud Operation ---
Mic For Taking Calls No
Voice Assistant Access
Amazon Alexa No
Google Assistant No
Siri No
Connectors
3.5mm No
1/4" No
Lightning No
4.4mm balanced No
XLR4 balanced No
2.5mm No
Other None
Specs
Frequency Response 20-20k Hz
Sensitivity 98 dB
Impedance 36 Ohms
Weight 2.9 ounces
Cord Length 48"
Parts Warranty Lifetime
Labor Warranty Lifetime

Product Research

Features

Overview: The Koss Rukus-series RUK40s are lightweight on-ear headphones. The uniquely designed ear cushions help eliminate ear fatigue, so you can listen comfortably for hours. The RUK40s use dynamic elements for smooth bass and a wide frequency response. The earcups pivot so you can lay them flat for storage or packing in a suitcase.

Cord: The headphones have a 4' tangle-resistant flat cord terminates with a slender 3.5mm plug. The narrow collar on the plug allows you to connect to recessed headphone jacks or portable digital music devices with hard cases.

Warranty: The RUK40s are covered by the Koss Stereophones Limited Lifetime Warranty.

Specifications:

  • Frequency Response: 20Hz-20kHz
  • Sensitivity (dB/1mW): 98dB
  • Nominal Impedance: 36 ohms

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