Pros: Awesome highs, mids and lows- all frequencies sound clearer than any other headphone I've tried. As I'm not a fan of noise-canceling phones (they tend to lack the range and they're overpriced), these do a great job of drowning out external sounds. These are soft and comfortable, and I've worn them for over 6 hours straight without any discomfort on my ears or head. The build quality is excellent, and while I'm careful

Cons: While they are circumaural, they still have an open ear design (which is partly responsible for the crisp, natural sound). Needless to say, I wouldn't recommend these to people working in the office- you'll probably bother your coworkers. For that purpose, I'd recommend Sennheiser's lower-end (but still awesome) EH-350 headphones- unfortunate that Newegg no longer carries them.

Other Thoughts: These are not the kind of headphones you put on for privacy- rather these are for audiophiles who want to hear every nuance in their sound. While I originally bought these to listen to music, they work incredibly well when gaming- just be sure to get a decent soundcard- most integrated audio chipsets lack the SNR for quality playback (Realtek 889 or better).

Pros: These headphones are great! The ear pads are ginormous and very soft. I have worn these for many consecutive hours late at night with little/no discomfort. The sound quality is very impressive. I notice detail in music I have never been able to hear before.

Cons: Pricey. Definitely crackles a little bit at high volume with high bass. The 6.3mm connector is pretty bulky, so it can fall out of an mp3 player easier than 3.5 connectors.

Other Thoughts: There is no in-line volume control, but that doesn't bother me. Sennheiser makes the best headphones/sets IMO.

Pros: the best headphone i ever use. and the most expensive too. great sound and bass. using it with a Sound Blaster X-Fi Titanium Fatal1ty Professional Series sound card. and it came with some earphone, havent tried those yet.

Cons: none

Pros: Sound amazing with no burn in (though I'm sure they'll be better with it). Bass is really there, which is important to me for the kinds of music I listen to (bass guitar-heavy stuff). The highs and mids are still there too. I was afraid of the 280's because of the lacking bass and didn't want to have to reset the equalizer on all of my electronics to account for lacking bass. So glad I went with these over the 280s.

Cons: Some sound leakage both in and out (because they're open headphones, not closed), but nothing bad in my opinion. Very long cord. I just wrapped it around my mp3 player and shoved it in my pocket anyway.

Other Thoughts: I got these to replace a pair of closed headphones that, no matter how much I broke them in, they still hurt my head after about 30 minutes. I recommend these over any closed headphones, especially dj's. I was afraid of the 280's because of the lacking bass and didn't want to have to reset the equalizer on all of my electronics to account for lacking bass. So glad I went with these over the 280s. Sounds great with a sound card.

Pros: Dear Newegg:
About 5 minutes ago I submitted a review for SENNHEISER OMX70 3.5 mm right-angled stereo mini-jack plug Connector Earbud Adjustable stereo clip-on Sport earphones. However, I meant for that review to be used for the Sennheiser HD555.
Please change it if possible.
Thanks

Cons: Please see above

Pros: So I've owned these babies for probably 2 years or so. I've probably dropped them thousands of times, ran over the cord with my chair, dropped them on my desk, etc. The actual headphones themselves have never broken, the plastic and fit has always been perfect.

However, due to the vary large cord, and the very small distance from my computer, the cord began to tangle. This caused cuts in the tubing covering the wires, but this didn't actually damage the sound.


However, FINALLY, the sound in the left headphone cut out. It almost seemed like it was supposed to happen, with all the damage these have taken.

By the way, the bass became clearer and clearer towards the end, and I loved these all the way.

Cons: Very very long cord causes tangles and bends.

Other Thoughts: Well worth the money

Pros: I honestly don't know where to start. I am having a hard time wanting to listen to my computer speakers or home theater speakers, and they are both high end Klipsch speakers which are in my opinion the best there is. These headphones sound just as good if not better. I can hear so many aspects of the music, and small things I could never hear before. I am almost speechless at these headphones. The highs and lows are outstanding, and the bass is perfect. I listened to BEATS by Dr. Dre ate Best Buy and these Sennheiser HD 555's BLOW THEM AWAY! The clarity of these headphones is just insaine! I am listening to them on my computer right now with an HT Omega Carlo Plus+ sound card. The combination of the two put together in mind blowing. I am not using a headphone amplifier either, and I see no need to unless you would like to lose your hearing. I am a huge audiophile and accept nothing but the best in my car, computer, or home theater. Trust me you will not be disappointed if you buy these

Cons: You don't own them yet! I couldn't live without them.

Pros: So many of you wonder, "Is it really worth it to upgrade to the HD555's from an already decent headphone set?" YES!

These headphones are way out there. I was a bit skeptical when I read the reviews when I heard things like: "They're so comfortable, I forget I'm wearing them!" or "The bass is amazing..". Well all this is true.

Music-
When It comes to music these headphones let me listen to sounds I have never heard before. I listen to lots of different music and everything is so balanced and perfect there is nothing to complain about.

Gaming-
I play a lot of Counter-Strike:Source and other games.
I wanted headphones that were top of the line. I need the best to hear where enemies are gonna pop out from. Immediately I realized how much better these were from my Icemat Siberas. I can literally close my eyes and point to exactly where the enemies are just by sound ALONE! These headphones are amazing!


Pros-

Amazing Comfort

Sound Quality is insane!

Beats Icemat

Cons: I really can't think of anything...

Cons-

WHAT?.

Other Thoughts: JUST BUY THEM!!!!!!!!!!

Also, I was a bit mad that I could plug it in into my speakers headphone jack but, I could care less now that I know how good these headphones are.

READ THIS!!

If you've heard anything about the bass being bad or too low. THEY ARE WRONG!

It is true that the bass is weak when you first get them but, YOU NEED TO LET THE HEADPHONES BURN IN. Most high quality headphones are like this, give it time.

It takes only a couple hours till the bass starts kicking in. The bass is incredible!

Just so you know.. I paid 130$ for these.
It was worth it.

Pros: These are hands down the best circumaural headphones for the money. Perfect balance of price/performance. I've had these for more than a year, and still look EXACTLY they same way as the day I got them. I break things easily, and it REALLY surprises me that these have lasted this long in new condition like they have. These are the most comfortable headphones. I wear them for about 4-6 hours daily, and I mean daily. Sound is untouched and comes through like it should and like it was intended. Do your research and there will be no surprises.

Cons: None that I can think of, honestly. We all love to be critics, but there is nothing I can think of that would be a con.

Other Thoughts: If people think these are uncomfortable, they either have the most oddly shaped head or they will NEVER find comfortable headphones. These are hands down the easiest headphones to wear for hours on end than anything I've ever come across in my life. I use upgraded padding than what comes stock (sent to me free) I don't know if they sell them, but if they do they would only be 5-10 dollars I'm guessing. Better padding material than the foam and fit better.

Pros: look

Cons: very uncomfortable, wear it for less than 30 min. and your head starts to hurt. wires are VERY weak. not that great sound quality