Summary: The problem with these ear buds is that they are so big that they don't want to go in your ears. Once they are in they promptly want to fall out. This is what is wrong with the sound quality. When they are all the way in the ear, they sound ok. But since they will not stay there, most of the time it is impossible to hear anything with them. I am returning mine. I have used Maxell earbuds in the past. While not perfect, the Maxells were much better than these.
Summary: I've had trouble finding earbuds that sounded good w/my Ipod, after it's earbuds wore out. These are great! This is my 2nd set. The first set got a cord chomped by the kitten. Can't believe the value, but Koss has a reputation for great sound.
Summary: These are not the most comfortable headphones, particularly if you compared them to the old apple earphones. Nevertheless, the sound quality is good; though I cannot speak on the longevity since I have only had the product for about a week. Note that the ear plugs are not rubberized and they are slightly large, which maybe important if you have small ears. Besides the slight hiccup in comfort, I would recommend them as budge ear phones.
Summary: As other reviews mentioned, these ear buds are fairly large. They don't quite fit into the ear but mostly rest on them without falling out. They have great sound, which is what you'd expect from Koss. The cord is short to medium in length, though I like not having so much slack to worry about. I use these on my laptop and they get as loud as I could possibly want to listen to anything. I paid under $3 for them and couldn't be happier.