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Koss RUK30

In-ear headphones (Red)

4 Reviews

Item # 245RUK30R

This item is no longer available.

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Our take on the Koss RUK30

Better sound is within your budget

Koss has long been known for making great-sounding portable headphones that won't break the bank. Their RUK30 in-ear headphones are a terrific way to upgrade those stock earbuds without spending a fortune. These sleek, comfortable headphones are a great option if you want to enjoy music on your mobile device with no hassles. The flat, tangle-resistant cord will help eliminate annoying knots, so you can keep these earbuds in your pocket or bag for on-the-go listening. Koss includes three pairs of ear tips to help you find the right fit for proper noise isolation as well as comfort.

Product Highlights:

  • includes three pairs of silicon ear tips for optimum comfort and noise isolation
  • flat, tangle-resistant 4-foot miniplug cable
  • frequency response: 15-20,000 Hz
  • sensitivity: 110 dB
  • impedance: 16 ohms
  • warranty: lifetime
  • Our 60-day money-back guarantee

What's in the Box:

  • Red earbud headphones with an attached 4' flat cord (3.5mm miniplug)
  • 2 Medium silicone tips (installed)
  • 2 Large silicone tips
  • 2 Small silicone tips
  • Limited Lifetime warranty sheet
  • Note on environmental protection

Easy to put in my ear and sound excellent

John, Cloveredale Ca


Koss RUK30 Reviews

Average Customer Review(s):

(4 Reviews)

Easy on the ear for a great price

Namaste16 from Silver Spring, MD on 3/10/2013

Crutchfield Customer Review (What's this?)

These little Koss headphones are great. I wanted an inexpensive pair of headphones for my mp3 player, and I definitely feel as though these were a steal. The sound is rich and full. The bass carries very nicely with no distortion. I do wish there was a bit more depth in the base, but I really only miss it when I'm listening to genres that favor heavy bass (R&B, Bossa Nova, etc). The red is fun. The construction is solid, and as a person with smaller ears, the customizable ear pieces are key. I'm not sure if the angle of the earbud in the ear is really beneficial, but it's an interesting concept. I would highly recommend the RUK30s. I am purchasing a pair for my 9 year old!

Pros: Terrific sound quality Awesome price Fun colors

Cons: Not a single thing

Good value earphones

Bahn from New York on 1/30/2013

Crutchfield Customer Review (What's this?)

I maxed all the attributes considering the price it was being sold at as it performed above my expectation. Bass and treble are balanced that I barely catch distortion unlike my iBeats earphones. My expectation of course is based on my Sony PLIIX and Dr. Beats earphones. I have quite a collection of close-ear headphones but for my workout and other non-desk activities I use earphones. I'm very satisfied with the rubber earplugs, doesn't slip as bad as my Sony & more conforming that iBeats.

Pros: Cheap, comfortable, balanced sound, signal-to-noise ratio seems higher than iBeats and the nut head looks very cool and turns out to be a good push rod when installing the set into your ears. Uses the flat cable form so it doesn't tangle.

Cons: None I can think of.

Koss earbuds

John from Cloveredale Ca on 12/12/2012

Crutchfield Customer Review (What's this?)

Easy to put in my ear and sound excellent


Cons: Not only best price around - Crutchfield orders are shipped immediately

Koss Earbuds

DaveL from Parkersburg, WV on 11/16/2012

Crutchfield Customer Review (What's this?)

I use mine with a KIndle Fire and the sound quality is fantastic. The buds fit the ears nicely and are comfortable.

Pros: Sound Quality



Hands-on research

Features and Specs

Fit Style In-ear/Earbud
Earcup Type Closed
Earcup Width x Height 0.55" x 0.55"
Noise-canceling No
Bluetooth No
Mic For Taking Calls No
iPhone Control ---
Lightning Connector No
Android Control ---
Frequency Response 15-20k Hz
Sensitivity 110 dB
Impedance 16 Ohms
Weight Not Given
Cord Length 48"
1/4-inch Adapter Included No
Volume Control No
Parts Warranty Lifetime
Labor Warranty Lifetime

Product Research


Overview: The Koss Rukus-series RUK30 features deep bold colors with a design that resembles a hex-head bolt. These noise-isolating in-ear headphones block exterior noise so you can hear your music clearly, without outside interruption.

Silicone Tips: The RUK30s come with three sizes of silicone ear tips (small, medium, and large) for a comfortable fit.

Cord: The headphones have a 4' straight, tangle-resistant flat cord with a slender 3.5mm straight plug. The small diameter plug design can be easily plugged into recessed headphone jacks or when the smartphone or digital music player is contained in a hard case.

Warranty: The RUK30s are covered by the Koss Stereophones Limited Lifetime Warranty.


  • Frequency Response: 15Hz-20kHz
  • Sensitivity (dB/1mW): 110dB
  • Nominal Impedance: 16 ohms

Our Product Research Team

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