Summary: If you're looking for great sound quality in an affordable package, these headphones are a good deal. The HD 558 are surprisingly much better than my HD 280 pair I had previously used. I am actually shocked by just how much better they are. Sound quality and comfort are much improved. I can't attest to durability yet since they are new, but the head piece looks to use the same construction, so I suspect it may suffer from the same flaws the HD 280 had.
Summary: These are amazing headphones, I used to have beats solos and I thought that those were amazing but after trying these i am just blown away. I wish I would have gone straight to these instead of the solos. the build quality is very good and the headband and ear pads are very comfortable.
Summary: i'm speechless, luckily i can type. I just opened these headphones up and i am so incredibly blown away. I have sampled many other headphones and this has to be one of the best i've ever used. I listen to a variety of genres, mostly metal, but i can go from metal, to hip hop, to folk, to country (i refuse to listen to pop so sorry i cannot provide input on that genre) and these headphones capture every tone perfectly that the genre's sound is about.
Pros: price, light, beyond comfortable, fantastic range
Cons: a little fragile, other than that nothing to complain about
Summary: I bought these to replace an old pair of on ear Skullcandy headphones that I own. I wanted over the ear headphones for better comfort, and I wanted something that sounded good. Well, these have delivered in SPADES. They are the best pair of headphones I've had, and the best that I even tried out in various stores.
Summary: Sound: Excellent overall. The base is quite adequate for a more balanced user, not for heavy base users. Points out the lacking COMPARABLE quality of downloaded tunes that one would not notice normally. (example, computer with good sound card, try CD vs song ripped from CD vs purchased download) However the headphones are still quite stellar for downloads.
Summary: I had always heard that Sennheiser made good headphones, but I was still surprised. These open-air headphones hardly feel like they are even on your head, and have used them for hours at a time, without any discomfort. I can also have a conversation with someone without taking them off. This can be a negative for some people, though. These headphones do not block noise.
Pros: Very comfortable. Spectacular, natural sound
Cons: The mini-jack adapter is fairly thick. Wouldn't plug into my Klipsch speaker's headphone jack.