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Koss KMO20

Around-the-ear headphones

1 Review

Item # 245KMO20G

This item is no longer available.

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Our take on the Koss KMO20

Koss goes camo

Headphone pioneer Koss has teamed up with camouflage designer Mossy Oak to deliver a unique line of headphones that are certain to attract attention, or possibly keep you hidden. The KMO20 delivers bold sound from a rugged design that's as tough as it looks. The large earcups completely cover your ears, and the closed-back design helps keep external noise from distracting you from your music. Soft padding on the earcups and the flexible headband ensure comfort for long periods. Sturdy yet lightweight, these headphones are great for outdoor use, especially given their Mossy Oak makeover.

Product Highlights:

  • Break-Up Infinity® camouflage design from Mossy Oak
  • closed-back design keeps out external noise for listening in any environment
  • 8-foot miniplug cable
  • frequency response: 30-20,000 Hz
  • sensitivity: 97 dB
  • impedance: 32 ohms
  • warranty: lifetime
  • Our 60-day money-back guarantee

What's in the Box:

  • Camo over-ear headphones with attached 8' cord (3.5mm plug)
  • Limited Lifetime warranty sheet

Koss KMO20 Reviews

Average Customer Review(s):

(1 Review)

Just what I wanted

Donna S. from Manchester, MI on 5/4/2013

Crutchfield Customer Review (What's this?)

I called to find headphones to cover my ears while on my riding lawnmower. I didn't want to use my pricer headphones but wanted something for outside use. Extremely comfortable, keeps out most of the noise enough so I can still hear a baseball game. The camo is very cool too. Thanks Crutchfield for the two day delivery.

Pros: Very comfortable, good sound, camo looks great.



Hands-on research

Features and Specs

Fit Style Over-the-ear
Earcup Type Closed
Earcup Width x Height 4.417" x 4.417"
Noise-canceling No
Bluetooth No
Mic For Taking Calls No
iPhone Control ---
Lightning Connector No
Android Control ---
Frequency Response 30-20k Hz
Sensitivity 97 dB
Impedance 32 Ohms
Weight 10.8 ounces
Cord Length 96"
1/4-inch Adapter Included No
Volume Control No
Parts Warranty Lifetime
Labor Warranty Lifetime

Product Research


Overview: The Koss KMO20g over-ear, full-size headphones are designed for comfortable listening for long periods of time. The soft, noise-isolating ear cushions surround the ear to block outside noise, while the sturdy headband sling prevents fatigue. The KMO20g has a tough exterior, so they can be used outdoors, as well as in the comfort of your living room. The headphones feature the popular Mossy Oak Break Up Infinity (green) pattern.

Cord: The headphones have an 8' heavy-duty straight cord that connects to the left earcup, and 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 KMO20g is covered by the Koss Stereophones Limited Lifetime Warranty.

Note: Some packaging may incorrectly indicate a one-year warranty.


  • Frequency Response: 30Hz-20kHz
  • Sensitivity (dB/1mW): 97dB
  • Nominal Impedance: 32 ohms

Our Product Research Team

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