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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

Koss RUK30 Reviews

Average Customer Review:

4 Reviews

Easy on the ear for a great price

Written by: Namaste16 from Silver Spring, MD on March 10, 2013

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Comfort
  • Noise Reduction
  • Sound Quality

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

Written by: Bahn from New York on January 30, 2013

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Comfort
  • Noise Reduction
  • Sound Quality

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

Written by: John from Cloveredale Ca on December 12, 2012

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Comfort
  • Noise Reduction
  • Sound Quality

Easy to put in my ear and sound excellent


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

Koss Earbuds

Written by: DaveL from Parkersburg, WV on November 16, 2012

Crutchfield Customer Review (What's this?)

  • "Coolness Factor"
  • Build Quality
  • Comfort
  • Noise Reduction
  • Sound Quality

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

What's in the box?

Download owner's manual

  • Silver 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

Features and Specs

Fit Style In-ear/Earbud
Earcup Type Closed
Noise-canceling No
Bluetooth No
Frequency Response 15-20k Hz
Sensitivity 110 dB
Impedance 16 Ohms
Weight Not Given
Cord Length 48"
Airline Adapter Included No
iPod Control No
Volume Control No
Built-in Microphone 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

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 verify what’s in the box, 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.