Koss SPARKPLUG - Stereo In Ear Ear Plugs

by Koss

• Frequency Response - 10-20,000 Hz
• Dynamic element for extended frequency response
• Unique earbud design directs sound into the ear canal for deep bass and extended frequency performance
• Speciality ear cushion material forms slowly in the ear canal to provide a custom fit and maximum isolation
• Includes replacement ear cushions

Product Details

• Product Dimensions: 6 x 4.5 x 1.3 inches ; 1.4 ounces
• Shipping Weight: 1 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B00081A2DQ
• Item model number: 156423
• Average Customer Review: 3.6 out of 5 stars  See all reviews (485 customer reviews)
• Date first available at Amazon.com: October 2, 2001

Product Description

A Portable headphone is a headphone that is used on-the-go. When used in your iPod or other portable player, you want to match superb sound with absolute comfort. That's when the Koss Spark Plug stereo earphone makes senseThe SparkPlug features a dynamic element that is positioned just outside the ear and connected to a tubular port structure that is inserted on a soft expandable cushion into the ear canal. The soft foam cushion expands for a custom fit to improve isolation and enhance deep bass and treble clarity. Now with improved slow memory ear cushion made of hydrophillic, formed urethane, you are guaranteed a custom fit every time. Ths SparkPlug also features a white cord to compliment many mp3 players. The fit enhances isolation when you want to plug out ambient sounds that interfere with the listening experience. The SparkPlug has a frequency response performance of 10Hz-20,000Hz and full Sound of Koss. Combined with your favorite music and a portable sound system, it is the ultimate accessory on the go. Built to last, The SparkPlug is covered under Koss' No-Questions-Asked Lifetime Warranty - the only warranty of its kind in the stereophone industry. Straight, dual entry 4 foot cord.

Most Helpful Customer Reviews

330 of 347 people found the following review helpful

5.0 out of 5 stars Best for the money. May 13, 2005

By I Am Me

Being somewhat of an audiophile, I went researching for a good pair of headphones. I was looking at the product lines from Sennheiser, Beyerdynamic, Grado, Shure, and Etymotic.

I considered what I wanted these headphones for and it was to study in places like starbucks or barnes and nobles. So naturally, I decided on sound isolating headphones. This left me with either closed full-size over the ear headphones or earbuds. If you haven't seen them, full-size headphones are huge! They pretty much cover the entire sides of your head, we're talking Princess Leah hair buns (star wars). Besides that, the higher quality headphones require an additional portable amplifier to sound good because most portable devices aren't powerful enough to drive them.

Now I focused on earbuds. After reading review upon review about Shure and Etymotic, I would always come across reference to Koss "The Plug" and Sony's isolating earbuds (forgot the model) from an audio forum. Out of the box, the Sony is supposed to be better than the Koss model. However, what I found was that for a fraction of the price of Shure and Etymotic brands (I think the top model is $500) and a bit of elbow grease, the less expensive Koss earbuds could sound better than the Sony's and nearly as good as the Shure and Etymotic. Doing a search resulted in many websites referring to methods of "modifying" the Koss earbuds.

I was convinced and went looking back in April. However, when i got to the store, I couldn't find any "The Plug". All I found was "Spark Plug". I was confused but I bought them anyway. I searched amazon and realized that they must be the 3rd iteration of Koss's earbuds because I only came up with one result, and it said it was added to amazon only 2 days before I bought it locally. Since I've never heard the 2nd iteration (purple/silver) I can't comment on sound. However, aesthetic wise, this new version was definitely designed for use with the Ipod (which I don't own, but that's okay, it matches my stuff anyway) It still has that silver ring with Koss on it, but the rest of the earbuds are all white and more of a retro simplified shape. Looks clean, nothing fancy.

As for fit. No problems here. I read many complaints on the second version about the fast expanding foam. The foam on this version expands slowly. It's quite comfortable and after awhile I forget I'm wearing them. I even wear them in bed sometimes.

Sound wise, out of the box, the bass is really boomy, i prefer a tight bass (as with many audiphiles, thus the mods). If you like to listen to music heavy in bass, like rap or house, or whatever, then you'll like these earbuds straight up. You can feel the bass "pound" in your head.

Unfortunately, for me, I don't listen to that when I study. So, I decided to modify the earbuds. The only mod I felt necessary was the one to tone down and tighten the bass, which is done by covering the ports. Did that with some trimmed clear tape (didn't want to open the earbuds and place eletrical tape inside, as most DIYs state). The result, nice, very nice. With the lower frequencies toned down, I can now hear my mids and highs quite clearly. This is especially important since I listen to mostly light vocal music while studying, such as Sarah Brightman. In fact, after this mod, I can say these are the best headphones I've ever used, especially FOR THE PRICE.

As for sound isolation, the tape mod helped that too. On an airplane it completely drowns at the engine noise on only the 2nd tick of volume (out of 25 or so?!?) Keeping the volume low also cuts back on battery use and distortion. If I study with my friend, he has to wave his hand in my face or shake me to get my attention (again, only 1 or 2 ticks on volume). I've found you don't actually need to compress the foam to get them in your ear, just a little pressure and twisting does it.

I plan to get another pair for my new "workout" mp3 player arriving soon, so then I'll be able to comment on how well it stays in during high activity and sweat.

Pros:
-Great sound for the money
-Sound isolation is awesome, even better than the $300 Bose active sound cancelling headphones (I wasn't impressed at all, not even with the sound of those).
-Looks clean and somewhat stylish (ipod style). Has a sort of classy, expensive look to them, not the traditional black eggshape of most earbuds
-extra pair of foam buds included (they're backups/replacements, not an alternative size, but I don't think an alternate size is needed)

Cons:
-Boomy bass out of the box. Drowns out the mids and highs. This is easily solved by the tape mod, i.e., covering the ports. (porting is a trick used by companies to make bass more "bassy") although this isn't a problem if you like the "feel" of heavy bass.
-no case included. (hey, it probably cuts down on cost)

Concerns:
-earwax (no problem here since I keep clean)
-wires are thin and COULD become tangled b/c no case included (i've had no problem with this actually, because I found the perfect sized case for it from an old mini rectangular shaped flashlight. I've read some people use a 35 mm film roll case/tube to hold it, which would be good too)
-you may have to "play" with the placement in your ear for the best sound quality, I've found what works best for me, just be patient. Depending on placement, the sound may be muddy. For me, that means i have them too deep in the ear.

70 of 76 people found the following review helpful

5.0 out of 5 stars Very happy with these in-ear phones February 3, 2006

By Robert Haven VINE™ VOICE

The ear buds that come with the iPod won't stay in my ears and those little foam slip covers always come off and they generally drive me crazy. So I normally use good over-the-ear headphones. But I needed some in-ear phones to wear at certain times. These Koss ear phones have been great, and you could buy 10 pairs or more for the price of some others!

I'm not an extreme audiophile, but I do appreciate good clean sound. I like medium-strong bass, but it has to be clean and not muddy and not overpower the rest of the frequencies. The bass in these Koss plugs might be just a bit too much, but certainly not enough that I'm going to bother trying to modify them with straws and duct tape. You can adjust the position of the phones in your ear to reduce the bass, too. Overall, the sound is quite good, but not as clear and bright as I would expect from expensive phones.

Someone said they look funny in your ears. I suppose that's true, but I don't care all that much.

In summary, they sound very good (but not excellent), they are comfortable and stay in my ears, and they are incredibly cheap! Highly recommended. (P.S. please be careful with volume levels to avoid long-term ear damage. Really. Can you imagine not being able to enjoy music when you're 40 years old? How horrible! Turn down the volume and your ears will adjust to the lower level.)

28 of 29 people found the following review helpful

3.0 out of 5 stars Good enough for $12 May 11, 2007

By Timothy B. Dereg

Amazon Verified Purchase

I don't demand the utmost in sound fidelity, but like so many others have commented I also found the bass on these earplugs to be so overwhelming that it drowns out all other frequencies. I put tape over the back of the plugs, and that helped muffle the bass enough that I can now hear the higher frequencies.

Still, these are cheap earplugs, so don't expect top sound quality. I find that the foam tips on these earplugs fit my ears better than a pair of more expensive Sony earplugs that take those replaceable foam covers. Granted, the sound quality is less than those higher-priced earplugs, but I can wear these Koss earplugs for far longer in comfort.