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Koss RUK40

On-ear headphones (Blue)

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  • Koss RUK40

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Item #: 245RUK40L
 

Review Summary

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Our take on the Koss RUK40

by 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.
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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
  • Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and Specs
General
Fit Style
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On-ear
Earcup Type
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Closed
Noise-canceling
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No
Bluetooth
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No
Frequency Response
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20-20k Hz
Sensitivity
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98 dB
Impedance
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36 Ohms
Weight
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2.9 ounces
Cord Length
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48"
Airline Adapter Included
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No
iPod Control
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No
Volume Control
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No
Built-in Microphone
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No
Parts Warranty
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Lifetime
Labor Warranty
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Lifetime
Product Research
What's in the box?

Download owner's manual

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

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

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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Koss RUK40 Reviews

Average Customer Review:

2 people say:

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5 out of 5

Lightweight quality

Written By Gadget lover, Ohio on Friday, July 12, 2013
Crutchfield Customer Review (What's this?)
 
Wanted a lightweight, good sound for when I run or walk. These surpassed my expectation.
Pros:
Lightweight, comfortable, good sound, works well with iPhone
Cons:
Fit is not as snug as I would like
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"Coolness Factor"
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Comfort
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5 out of 5

headphones

Written By Nancy, Texas on Monday, December 31, 2012
Crutchfield Customer Review (What's this?)
 
Only had these a short time, but my teenage son loves them. No complaints. Price was reasonable.
3 out of 3 people found this helpful
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"Coolness Factor"
Build Quality
Comfort
Noise Reduction
Sound Quality
 

For a more in-depth review and enhanced detailed information on the Koss RUK40, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_245RUK40L/Koss-RUK40-Blue.html ).