Cons: These can be somewhat difficult to put on/take off. I wish the part that went around the ear had a swivel sort of thing, so you could swing that part out and adjust them more comfortably onto the ear.
Summary: I guess i prefer my Grado's at over 10X the price in terms of audio quality, but, really, these are amazing phones at this price! Nice open bass, extended highs, uncolored sound--you really can't lose. Very acoustically transparent (non-isolating), so you can wear these safely walking around (assuming you don't blast the audio level), though they do give you a slightly geeky look.
Summary: The best headphone sound I ever had or tested. They easily beat even ten times more expensive full headsets. I prefer to listen to the music on them than on my HiFi speakers. The sound is clean, dynamic, all frequencies are there, powerful bass at the whole volume scale. Chopin, Dire Straits or Dj Tiesto, all sound great.
Summary: Great pair of ear clips. Don't buy cheap $5 ones from wal mart that sound like garbage. These have some nice bass, yet still a clean and crisp sound. Used them for about a week now. Love them for the gym. I can't stand ear buds, so these are some solid clips.
Excerpt: Koss's KSC75 headphones are widely known for offering great sound quality at a very low price. Bass isn't very potent, but it's decent. Highs are quite clear, and mids are very warm for such a cheap pair of headphones. They're lightweight and seem to be very durable. Koss's customer support and warranty coverage is second to none.
Excerpt: Koss KSC75's are great. For the price of $10-$20 dollars they are good. They can compare to $50 headphones in terms of sound quality. Now the looks are pretty good. The build quality is pretty solid. When you first get the item, it may be a bit weird. It might take you a few minutes to get the thing on firmly, and still then, it may not fit firmly. This shouldn't be a problem, so don't worry.
Excerpt: Koss' KSC-75's are widely regarded as one of the finest inexpensive headphones made, with prices below $20 (The Koss Porta Pro's have similar status at a slightly higher price point). I think sound quality evaluation is extremely subjective and prone to placebo effects, but I am confident that these headphones are superior to typical stock headphones for portable music players and other very cheap headphones.
Excerpt: I'm going to start off with the pros and then talk about the cons. The pros are that this is a lightweight set of headphones that hook over your ears. They are one-size-fits-all, which of course means that some people will think it's too tight, while others think it's too loose. I think they are about right and have worn them for several hours at a time at work.