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  • Koss 'The Plug' In-Ear Headphones (Black)
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Koss 'The Plug' In-Ear Headphones (Black)

by Koss
| 6 answered questions

List Price: $19.99
Price: $9.70 & FREE Shipping on orders over $35. Details
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One Color
  • 16 to 23,000 Hz frequency response
  • Deep bass performance
  • 4- Foot cord
58 new from $7.91 1 used from $7.49

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Frequently Bought Together

Koss 'The Plug' In-Ear Headphones (Black) + Koss PORTABLE Replacement Cushions
Price for both: $13.69

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Color: One Color
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This item: Koss 'The Plug' In-Ear Headphones (Black)
Customer Rating (670) (216) (93) (14918)
Price $ 9.70 $ 14.99 $ 15.69 $ 7.59
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Amazon.com Amazon.com Best 4 Best
Color One Color Black White Black
Special Features Noise-Cancelling-Feature Information not Provided Carrying Case Ergo-Fit-Design
Fit In-Ear On-Ear In-Ear In-Ear
Dimensions 1 inches x 6 inches x 4 inches 6.8 inches x 5.5 inches x 2.5 inches 1 inches x 7.75 inches x 2.5 inches 6.75 inches x 3.6 inches x 3.25 inches
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Technical Details

Color: One Color
  • Noise-Cancelling-Feature

Product Details

Color: One Color
  • Product Dimensions: 6 x 4 x 1 inches ; 0.3 ounces
  • Shipping Weight: 0.3 ounces (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B00001P4XA
  • Item model number: 156407
  • Average Customer Review: 3.8 out of 5 stars  See all reviews (670 customer reviews)
  • Amazon Best Sellers Rank:
  • Date first available at Amazon.com: July 8, 2002

Product Description

Color: One Color

Product Description

The Koss Plug revolutionized the world of in-ear headphones. A first of its kind, these are stereo, noise isolating in-ear headphones that deliver the kind of accurate acoustical reproduction and isolation typically found in high-end, closed-style high fidelity headphones. A dynamic element positioned just outside the ear connects to a tubular port structure that inserts into a soft, expandable cushion. The soft, foam cushion expands for a custom comfort fit with every listening experience. It also improves isolation, plugging out ambient sounds, and enhances deep bass and treble clarity.

Amazon.com

Koss's miniature portable earphone, affectionately dubbed "The Plug," makes use of an ear-cushion material (similar to that used in sound-blocking earplugs) that slowly expands in your ear canal to provide a custom fit and maximum sonic isolation from external noises. A detachable, extrawide headband makes these Koss-termed "stereophones" easy to carry or store.

For accurate sound reproduction, these earbud-style headphones are made with oxygen-free copper voice coils and neodymium iron boron magnets. You can enjoy them with either a portable or home audio device, since both 0.125-inch and 0.25-inch adapter jacks are included.

"The Plug" weighs a mere quarter ounce and has a frequency response rated at an impressive 16 to 23,000 Hz (though its unlikely you'll hear bass output anywhere close to what you'd get from a similarly rated loudspeaker!).

Impedance is 16 ohms, with less than a 0.3 percent distortion and reasonably high sensitivity of 112 dB SPL/1 mW.

Customer Reviews

Uncomfortable in ears.
purchaser
I used the foam plugs that fit my ears best and have had no trouble.
K Short
They blocked out the outside noise and had good sound.
dalupster

Most Helpful Customer Reviews

247 of 253 people found the following review helpful By Mark Colan TOP 1000 REVIEWERVINE VOICE on June 9, 2003
Color Name: One Color Verified Purchase
NOTE: the description I saw on the Amazon page does not reflect the product I have. Above it discusses a headband and an adapter which are not part of this product. Also, the rated frequency response is 10-20k, not 16-23k. I think this is (or was) an Amazon editorial error.
My interest for this product is as a solution to listening to music, lectures, and movies while travelling, and I travel a lot. I have a set of Panosonic noise-cancelling headphones which were good (about five times more expensive than these earbuds) though bulky, but the plastic broke so they won't stay on my head now.
These earbuds are an excellent alternative to noise-cancelling headphones for the frequent traveller. I find them more comfortable for extended listening than most conventional headphones. The ability to seal out noise from the external environment is very good, and makes it possible to understand what actors are saying when watching a movie on an airplane.
The overall performance - sound quality and noise blocking - is not as good as the Bose noise cancelling headphones, but the Bose are 20 times as expensive, much less convenient to carry, and subject to damage from the rough world of the road warrior. If The Plug had an optional noise-cancelling unit (say, combined with the eq), it would be a killer combination - are you listening, Koss?).
The sound is good. Bass-heavy, to be sure; I would like them better if they had a flatter response, but the product is marketed at the portable music crowd, and many of them are looking for dramatic bass rather than golden-ears sound.
Besides, mobile sound is always a compromise, it's just a question of whether the compromise they chose works for you.
Here are some problems I've heard and the solutions:
1. "They fall out of my ear.
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49 of 50 people found the following review helpful By Hrvoje Maric on February 25, 2002
Color Name: One Color
I heave read many of the review on this site, and I probablly would have not used my Koss earbuds to the full extend if I have not read many of the reviews. First issue is that people cannot get the earbuds to stay in their ear. I found my earbuds not needing any modification when it comes to foam, but rather they way the earbud is placed in. The first problem that I had is stuffing it in my ear, they would fall out, and the foam would look all pushed back on the stick (refering to the rubber sticking out from the headphone). YOu must firmly squeze the foam from all sides and quickly insert it into the ear. You will know if the ear bud is firmly in by shaking your head, and nothing is falling out. Do the same for thea other ear. Now you will hear the amazing quality of the sound that these pupies can give. The base is amazing, these earbuds I find better quality then my Sony Studio Monitoring headset (one great advantage of earbuds, the volume on my MD player doesn't have to be set to the max to hear any music). The sound quality is amazing, the isolation from outside is great, especially on a loud bus, unlike other earbuds. ONLY IF THE EARBUDS SET PROPERLY INTO THE EAR YOU WILL HEAR THE FULL QUALITY OF THE SOUND... I heard no distortion...I hope my review helped you on earbuds.
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86 of 95 people found the following review helpful By austin_Larry TOP 1000 REVIEWERVINE VOICE on December 29, 2001
Color Name: One Color
Ok the first thing about this review. I have a pair of the 'new' the Plug headphones. They are not the ones pictured here. They have no mute button and are metallic silver and purple in color not blue and yellow.
Apprently KOSS got a lot of feedback from the first version, they listened, and made a much better product. The ones I have are just fantastic. Great bass, like the original, but very good mids and lows as well. They work better as isolation headphones then anything I have used before, but apprently people who are audiophiles are not that impressed. Also they have fantastic volume ability. Because they are in your ear canal I can turn my portable equipment up really loud. I don't but its nice if you want to. Music sounds great with these headphones. Frankly best headphones I have ever used, BUT I am using the NEW VERSION not the blue and yellow ones pictured here.
OK right now what to do? I would call Amazon and MAKE SURE you are getting the new version. I never used the one they have listed here but almost everywhere I looked on the net, people say the new version is MUCH BETTER...
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21 of 21 people found the following review helpful By andreas838 on April 11, 2006
Color Name: One Color
I kid you not. Decided to splurge (over $300) on a super set of earphones for my ipod from Shure and hated them and sent them back. Then I tried these as a temporary solution and found them actually vastly superior in sound, aesthetics and discrete form. I simply love them. As a frequent traveller, I appreciate not hearing the usual yada yada on the airplane. Highly recommend them.
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28 of 30 people found the following review helpful By J. Hickman on November 25, 2003
Color Name: One Color
I'll keep this concise and pertinent...

GOOD
----
1. Very good sound (esp. for the price), just make sure you are not using any bass expansion/extension equalization. Even with old Sinatra, using my TDK Mojo's bass expansion sometimes causes distortion, simply because The Plug has exceptional low frequency response. So hip-hop obviously causes a lot of distortion w/ extra bass emphasis; I wonder if this is the 'muddiness' about which some have complained. Flat equalization (at least for bass) is a requirement for these headphones.
2. Excellent isolation and efficiency due to the foam sealing design. Just don't blow your eardrum turning the music up too loud, nor get run over by a bus 'cause you can't hear it coming!
3. Excellent overall sound quality; no tinny sound other reviewers have mentioned, unless The Plug is inserted incorrectly (ie - off-axis, or not "aimed" correctly).

BAD
----
1. True, the black foamy material does not stay compressed very long, so you have to 'roll' it in your fingers then immediately put it in your ear. I could see that those with small ears may have problems fitting these properly; problem solved by retrofitting a standard foam-type earplug (as others have mentioned). Whether you would or should do this is another question. The packaging does include a few different styles of foam inserts to try; coned, cylinder, etc. After using the coned ones for a long time, I've switched to the cylinder-shaped ones, which stay in better.
2. The first pair of these I bought had uneven bass; the left earplug's bass was a lower sound pressure than the right; treble was fine. I verified this with both ears and then with a function generator. I exchanged them and the subsequent pair is perfectly balanced.
3.
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