Pros 1. Inexpensive 2. Good amount of bass 3. Can isolate a lot of sound if placed correctly within ear. 4. Over-the-neck design is convienent.
Cons 1. Treble and mids could be better. 2. If not placed in ear correctly, will get poor sound quality.
Summary I got these for about $20 at Walmart. And I'm basically stacking them up against their $20 JVC marshmallow counterpart which I also own. They're both fairly similar to one another, and they're both definitely better than most stock headphones that come with mp3 players, especially the iPod. So that's basically my use for them, I wanted earbuds better than the ones that come with the iPod, and both the JVC and KOSS are 10x better.
Here's what I like about these KOSS:
1. They've got bass. Not an intense amount of bass, but a good amount. The JVC marshmallows don't really compare to them on this level.
2. If you put them correctly in your ear, with the right sized earbud, they don't fall off and they do a good job of isolating outside noise.
3. The cord design allows me to be able to take them out of my ears and just let them dangle around my neck instead of having to find a place to put them, or put them under and up of out of my shirt.
Here's what I don't like about them:
1. With some music, the mids and trebles aren't as clear as the JVC marshmallows. That would be my biggest complaint.
Figure out what you're going to be using them for and what kind of music you listen to most. If you're a bass junkie and like hip hop, go for this over the JVCs. If you like more acoustic stuff then go for the JVC's.
"Hip Hop Hooray!"on by CarlosRossi
Pros I love that boomy bass sound. 100 db sensitivty is no joke, these get loud! Great for hip hop that I listen to, but oldies sound excellent as well.
Cons Asymetrical wires are terrible but behind the neck use is growing on me.
Summary The rubber ear fittings are hard to keep a good seal. I used my wifes marshmellow jvc earbud large foam fittings and viola, these things are great with a good seal in your ear.
Pros Regardless what the editor wrote about these being bad for rock/metal, these are honestly the best buds I have ever owned. I also own a pair of Bose and Etymotic Research ER-6 buds. Bose is just a name but Etymotic are good for high quality buds.
Cons Tangles and not enough high end. Although it isn't that bad to gripe about it.
Summary If you are looking for a good sounding everyday paid of buds then get these. They are cheap and very light and sounds very good. Even blasting a bass-rich album such as And Justice For All by Metallica, the bass did not distort much, if at all. As far as fitting goes, every ear is different and koss does give you 3 total sizes to try. Bottom-line? Recommended!
Pros I couldn't find anything strikingly positive about these buds-- maybe if they fit better they'd be good?
Cons They didn't fit in any of the three sizes, making them uncomfortable and worthless at noise isolation with very bad sound quality.
Summary I was originally going to get a JVC marshmallow, but I got the Koss instead because of its "limited lifetime warranty" in which you pay $6 plus shipping for repairs (I didn't know how much the charges were at the time).
I was very disappointed with these earphones. I wanted to enjoy them, but I simply could not. I know you're supposed to get them in the ear canal to get the base and to reduce the "tinny" noise, but none of the sizes would fit my ears.
I hear good things about these 'buds from those who can wear them fittingly (maybe mine were defective...?) As for me, I'm not taking another chance with Koss, as these buds don't fit me at all. No matter how much sound potential there may be with these, I can't experience it due to its shape. I'd recommend a larger, better brand with more experience in making 'buds. I'm going for the JVC next.
Pros Comfort, price.
Cons Needed some minor modification.
Summary Let me start by saying that I've been through just about every IEM out there. I've done Etys, I've done Shures. I've done it all. When my Etys left side went out at work, I ran to K-Mart looking for a cheap replacement and came up with these.
Straight out of the box, the sound was muddied and the base almost too much. But, after a VERY SIMPLE modification, I'm left wondering why I ever paid over a hundred bucks for buds!
Take a small object, like the end of a paperclip or safety pin and gently widen the small hole in the paper filter beneath the silicone ear piece. Experiment a little, opening it up gradually, until you get the right sound for you. Once I did this, I found the mids and highs to be much more pronounced without being harsh and the bass still present.
Disclaimer: I don't claim to be an audiophile and if you want 'take my breath away sound' spend 300 bucks on a pair of buds and stay away from MP3s, but if listening to MP3s is your thing, you can't beat these little guys in bang for buck after the simple mod I mentioned above.